fix(cli): Be consistent about using deno.json's import map

[nellh]

In a few places the CLI was not using the import map correctly.

See #3289.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 47.02%. Comparing base (2964fad) to head (5807e73).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
cli/src/worker/annex.ts	0.00%	2 Missing ⚠️
cli/src/gitattributes.ts	0.00%	0 Missing and 1 partial ⚠️
cli/src/worker/git.ts	0.00%	1 Missing ⚠️
cli/src/worker/types/git-context.ts	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3295   +/-   ##
=======================================
  Coverage   47.02%   47.02%           
=======================================
  Files         583      583           
  Lines       36945    36945           
  Branches     1174     1174           
=======================================
  Hits        17372    17372           
  Misses      19386    19386           
  Partials      187      187           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.