Fix/copy for default seo data alerts

[leonidasmi]

Context

Summary

This PR can be summarized in the following changelog entry:

• Finalizes the copy of the new alerts for default SEO titles and meta descriptions.

Relevant technical choices:

Test instructions

Test instructions for the acceptance test before the PR gets merged

This PR can be acceptance tested by following these steps:

• Use the instructions in Add notification for unused SEO title and description features #22608, to make the 5 most recently modified posts have:
  • default SEO titles
  • default meta descriptions
  • both
• for each case, confirm that the copies are like the below:

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and if you activate Premium:

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Relevant test scenarios

• Changes should be tested with the browser console open
• Changes should be tested on different posts/pages/taxonomies/custom post types/custom taxonomies
• Changes should be tested on different editors (Default Block/Gutenberg/Classic/Elementor/other)
• Changes should be tested on different browsers
• Changes should be tested on multisite

Test instructions for QA when the code is in the RC

• QA should use the same steps as above.

Impact check

This PR affects the following parts of the plugin, which may require extra testing:

Other environments

• This PR also affects Shopify. I have added a changelog entry starting with [shopify-seo], added test instructions for Shopify and attached the Shopify label to this PR.

Documentation

• I have written documentation for this change. For example, comments in the Relevant technical choices, comments in the code, documentation on Confluence / shared Google Drive / Yoast developer portal, or other.

Quality assurance

• I have tested this code to the best of my abilities.
• During testing, I had activated all plugins that Yoast SEO provides integrations for.
• I have added unit tests to verify the code works as intended.
• If any part of the code is behind a feature flag, my test instructions also cover cases where the feature flag is switched off.
• I have written this PR in accordance with my team's definition of done.
• I have checked that the base branch is correctly set.

Innovation

• No innovation project is applicable for this PR.
• This PR falls under an innovation project. I have attached the innovation label.
• I have added my hours to the WBSO document.

Fixes #

[coveralls]

Pull Request Test Coverage Report for Build 085bb9905a29a1c9f4a86e2241bf4c61c9424712

Details

• 0 of 2 (0.0%) changed or added relevant lines in 1 file are covered.
• 119 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.007%) to 52.671%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/alerts/application/default-seo-data/default-seo-data-alert.php	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/integrations/admin/redirections-tools-page.php	8	0.0%
admin/class-expose-shortlinks.php	11	0.0%
src/integrations/admin/helpscout-beacon.php	100	0.0%

Totals
Change from base Build cd3adc2bc619ad5b187b27e7434d055b34059b05:	-0.007%
Covered Lines:	31269
Relevant Lines:	59532

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💛 - Coveralls

[thijsoo]

LGTM 👍