Allow x-api-key for public rest api

[ashika112]

Description of changes

We should check only custom authorization to override the IAM auth. This bring v6 in parity with v5 feature.

V5 Ref:

amplify-js/packages/api-rest/src/RestClient.ts

Line 163 in b88df66

if (typeof params.headers['Authorization'] !== 'undefined') {

Issue #, if available

#13310
#13378

Description of how you validated changes

• Manual testing
• Unit tests

Checklist

• PR description included
• yarn test passes
• Tests are changed or added
• Relevant documentation is changed or added (and PR referenced)

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

[pjmendozaa]

Please aws-team I have the problem, I see that is release that problem with x-api-key will be resolved.

[HuiSF]

Thanks for fixing this!
Added some nit-picking and sanity check comments.

[AllanZhengYP]

Thanks a lot for the fix! @ashika112 I only have a few questions.

[gerrytsui]

THANK YOU.
Version 6.5.3 is working without requiring our override of the x-api-key condition in /node_modules/@aws-amplify/api-rest/src/apis/common/handler.js

... just like it was BEFORE Jan of 2024.