chore(expect): fix future no-slow-type lint errors with expando properties

[dsherret]

Fast check will be getting a bit smarter at analyzing expando properties.

error[missing-explicit-return-type]: missing explicit return type in the public API
   --> V:\deno_std\testing\bdd.ts:582:11
    |
582 | it.only = function itOnly<T>(...args: ItArgs<T>) {
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
583 |   const options = itDefinition(...args);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
584 |   return it({
    | ^^^^^^^^^^^^^
585 |     ...options,
    | ^^^^^^^^^^^^^^^
586 |     only: true,
    | ^^^^^^^^^^^^^^^
587 |   });
    | ^^^^^
588 | };
    | ^ this function is missing an explicit return type
    = hint: add an explicit return type to the function

  info: all functions in the public API must have an explicit return type
  docs: https://jsr.io/go/slow-type-missing-explicit-return-type

error[missing-explicit-return-type]: missing explicit return type in the public API
   --> V:\deno_std\testing\bdd.ts:590:13
    |
590 | it.ignore = function itIgnore<T>(...args: ItArgs<T>) {
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
591 |   const options = itDefinition(...args);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
592 |   return it({
    | ^^^^^^^^^^^^^
593 |     ...options,
    | ^^^^^^^^^^^^^^^
594 |     ignore: true,
    | ^^^^^^^^^^^^^^^^^
595 |   });
    | ^^^^^
596 | };
    | ^ this function is missing an explicit return type
    = hint: add an explicit return type to the function

  info: all functions in the public API must have an explicit return type
  docs: https://jsr.io/go/slow-type-missing-explicit-return-type

error[unsupported-expando-property]: expando property referencing 'anything' conflicts with 'expect.anything'
   --> V:\deno_std\expect\expect.ts:209:19
    |
209 | expect.anything = anything;
    |                   ^^^^^^^^
    = hint: rename 'anything' to something else to avoid conflicts or create a temporary variable with a different name to use in the expando property reference

  info: expando properties get converted to a namespace and the reference conflicts with a namespace export
  docs: https://jsr.io/go/slow-type-unsupported-expando-property

error[unsupported-expando-property]: expando property referencing 'any' conflicts with 'expect.any'
   --> V:\deno_std\expect\expect.ts:210:14
    |
210 | expect.any = any;
    |              ^^^
    = hint: rename 'any' to something else to avoid conflicts or create a temporary variable with a different name to use in the expando property reference

  info: expando properties get converted to a namespace and the reference conflicts with a namespace export
  docs: https://jsr.io/go/slow-type-unsupported-expando-property

error[unsupported-expando-property]: expando property referencing 'arrayContaining' conflicts with 'expect.arrayContaining'
   --> V:\deno_std\expect\expect.ts:211:26
    |
211 | expect.arrayContaining = arrayContaining;
    |                          ^^^^^^^^^^^^^^^
    = hint: rename 'arrayContaining' to something else to avoid conflicts or create a temporary variable with a different name to use in the expando property reference

  info: expando properties get converted to a namespace and the reference conflicts with a namespace export
  docs: https://jsr.io/go/slow-type-unsupported-expando-property

error[unsupported-expando-property]: expando property referencing 'closeTo' conflicts with 'expect.closeTo'
   --> V:\deno_std\expect\expect.ts:212:18
    |
212 | expect.closeTo = closeTo;
    |                  ^^^^^^^
    = hint: rename 'closeTo' to something else to avoid conflicts or create a temporary variable with a different name to use in the expando property reference

  info: expando properties get converted to a namespace and the reference conflicts with a namespace export
  docs: https://jsr.io/go/slow-type-unsupported-expando-property

error[unsupported-expando-property]: expando property referencing 'stringContaining' conflicts with 'expect.stringContaining'
   --> V:\deno_std\expect\expect.ts:213:27
    |
213 | expect.stringContaining = stringContaining;
    |                           ^^^^^^^^^^^^^^^^
    = hint: rename 'stringContaining' to something else to avoid conflicts or create a temporary variable with a different name to use in the expando property reference

  info: expando properties get converted to a namespace and the reference conflicts with a namespace export
  docs: https://jsr.io/go/slow-type-unsupported-expando-property

error[unsupported-expando-property]: expando property referencing 'stringMatching' conflicts with 'expect.stringMatching'
   --> V:\deno_std\expect\expect.ts:214:25
    |
214 | expect.stringMatching = stringMatching;
    |                         ^^^^^^^^^^^^^^
    = hint: rename 'stringMatching' to something else to avoid conflicts or create a temporary variable with a different name to use in the expando property reference

  info: expando properties get converted to a namespace and the reference conflicts with a namespace export
  docs: https://jsr.io/go/slow-type-unsupported-expando-property

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.47%. Comparing base (6deab72) to head (ffb5e0f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4711      +/-   ##
==========================================
- Coverage   91.48%   91.47%   -0.01%     
==========================================
  Files         477      477              
  Lines       37268    37261       -7     
  Branches     5316     5316              
==========================================
- Hits        34093    34084       -9     
- Misses       3119     3121       +2     
  Partials       56       56              

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[kt3k]

LGTM