fix: remove optional chaining in JS file

[cjihrig]

Description of changes

This syntax fails on older versions of Node.

Issue #, if available

Description of how you validated changes

Unit tests

Checklist

• PR description included
• yarn test passes

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

[akshbhu]

lgtm

[codecov-commenter]

Codecov Report

Merging #7287 (d7d4247) into master (8775152) will decrease coverage by 4.06%.
The diff coverage is 46.81%.

@@            Coverage Diff             @@
##           master    #7287      +/-   ##
==========================================
- Coverage   56.43%   52.36%   -4.07%     
==========================================
  Files         445      497      +52     
  Lines       21859    25450    +3591     
  Branches     4373     4985     +612     
==========================================
+ Hits        12336    13328     +992     
- Misses       8745    11168    +2423     
- Partials      778      954     +176     

Impacted Files	Coverage Δ
.../awscloudformation/utils/auth-defaults-appliers.ts	89.65% <0.00%> (ø)
...wscloudformation/utils/verification-bucket-name.ts	42.85% <0.00%> (ø)
packages/amplify-cli-core/src/deploymentState.ts	100.00% <ø> (ø)
...amplify-cli-core/src/feature-flags/featureFlags.ts	83.10% <ø> (ø)
...-cli/src/extensions/amplify-helpers/git-manager.ts	88.88% <ø> (+3.70%)	⬆️
.../amplify-frontend-ios/lib/amplify-config-helper.js	1.01% <ø> (ø)
...provider-awscloudformation/src/aws-utils/aws-s3.ts	9.32% <0.00%> (-0.77%)	⬇️
...ion/src/iterative-deployment/deployment-manager.ts	7.05% <0.00%> (ø)
...y-provider-awscloudformation/src/resourceParams.js	15.15% <ø> (ø)
packages/amplify-util-mock/src/storage/storage.ts	0.00% <0.00%> (ø)
... and 109 more

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[github-actions]

👋 Hi, this pull request was referenced in the v4.51.0 release!

Check out the release notes here https://github.com/aws-amplify/amplify-cli/releases/tag/v4.51.0.