21848 decouple posts overview script enqueuing from class metaboxphp

[vraja-pro]

Context

Summary

This PR can be summarized in the following changelog entry:

• Decouple post overview scripts from the metabox scripts.

Relevant technical choices:

• I kept the name of the css and js files edit-page since this applies to the term overview page and post overview page. I added a comment in the css file. (And the global $pagenow name is "edit.php").

Test instructions

Test instructions for the acceptance test before the PR gets merged

This PR can be acceptance tested by following these steps:

• Go to posts overview page.
• Check you see the columns for the scores and cornerstone content.
• Hovers those headers and check you see tooltip.
• Resize the screen under 700 px width and toggle one of the post, check you see the columns without the screen reader text:
  
• Go to categories overview page and repeat the test.

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.

QA can test this PR by following these steps:

Impact check

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

UI changes

• This PR changes the UI in the plugin. I have added the 'UI change' label to this PR.

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 Decouple posts overview script enqueuing from class-metabox.php

[coveralls]

Pull Request Test Coverage Report for Build 426f90f156f8588e69230aa50091f3ad533691b2

Details

• 4 of 5 (80.0%) changed or added relevant lines in 3 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.003%) to 54.668%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
admin/class-meta-columns.php	2	3	66.67%

Files with Coverage Reduction	New Missed Lines	%
admin/metabox/class-metabox.php	1	21.87%

Totals
Change from base Build b4aded0c071ca8f782f70b68e130c00af2bf8f7e:	0.003%
Covered Lines:	29741
Relevant Lines:	54689

---

💛 - Coveralls

[pls78]

Acc ⚠️ :

• The cornerstone content X icon is misaligned when switching to small screen size
  

[pls78]

I'd avoid using a variable here, since we only use the value once.

[pls78]

CR && Acc: ✅