fix: handle no mock args

[edwardfoyle]

Issue #, if available:
#6653
Description of changes:
Handle case where no options are specified to mock

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Merging #6659 (06df18a) into master (38dab98) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #6659      +/-   ##
==========================================
+ Coverage   56.71%   56.76%   +0.04%     
==========================================
  Files         484      484              
  Lines       22006    22006              
  Branches     4395     4397       +2     
==========================================
+ Hits        12481    12492      +11     
+ Misses       8648     8638      -10     
+ Partials      877      876       -1     

Impacted Files	Coverage Δ
...ges/amplify-codegen/src/utils/getGraphQLDocPath.js	100.00% <100.00%> (ø)
packages/amplify-codegen/src/walkthrough/add.js	87.09% <100.00%> (+0.21%)	⬆️
...kages/amplify-codegen/src/walkthrough/configure.js	88.23% <100.00%> (+0.35%)	⬆️
packages/amplify-util-mock/src/func/index.ts	94.11% <100.00%> (+4.41%)	⬆️
...ges/amplify-codegen/src/utils/getIncludePattern.js	55.55% <0.00%> (+44.44%)	⬆️

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[jhockett]

LGTM

[github-actions]

This pull request has been automatically locked since there hasn't been any recent activity after it was closed. Please open a new issue for related bugs.

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