Fix array destructuring with fallback to prevent crashing when `getAudienceUserCountReportErrors` returns `undefined`

[hussain-t]

Summary

Addresses issue:

• 8144

Relevant technical choices

• This follow-up PR resolves a dashboard crash due to array destructuring when the getAudienceUserCountReportErrors selector returned undefined. The issue surfaced while enhancing the hasAudiencePartialData selector, which returns undefined when resolving the data. This has been addressed by implementing a safe fallback for destructuring. Please refer back to this commit for more context.

PR Author Checklist

• [x] 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.
• [x] I have added a QA Brief on the issue linked above.
• [x] 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[bot]]

Build files for 4cc97050ae6944142e198ff7e07de956f334eb98 have been deleted.

[github-actions[bot]]

Size Change: +1 B (0%)

Total Size: 1.81 MB

Filename	Size	Change
./dist/assets/js/googlesitekit-main-dashboard-********************.js	156 kB	+1 B (0%)

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