Improve installed WP Consent Mode plugin detection (follow-up)

[nfmohit]

Summary

Addresses issue:

• Update WP Consent API plugin detection to account for non-standard location #8307 (comment)

Relevant technical choices

This PR applies this approval feedback. Besides, the original commit was accidentally reverted, so this PR reapplies it.

PR Author Checklist

• My code is tested and passes existing unit tests.
• My code has an appropriate set of unit tests which all pass.
• My code is backward-compatible with WordPress 5.2 and PHP 7.4.
• My code follows the WordPress coding standards.
• My code has proper inline documentation.
• I have added a QA Brief on the issue linked above.
• I have signed the Contributor License Agreement (see https://cla.developers.google.com/).

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Code Reviewer Checklist

• Run the code.
• Ensure the acceptance criteria are satisfied.
• Reassess the implementation with the IB.
• Ensure no unrelated changes are included.
• Ensure CI checks pass.
• Check Storybook where applicable.
• Ensure there is a QA Brief.

Merge Reviewer Checklist

• Ensure the PR has the correct target branch.
• Double-check that the PR is okay to be merged.
• Ensure the corresponding issue has a ZenHub release assigned.
• Add a changelog message to the issue.

[github-actions]

Build files for 778c18c have been deleted.

[aaemnnosttv]

Thanks Nahid!

[aaemnnosttv]

Great! Thanks @nfmohit 🚀