Docs: Fix missing documentation in Plugins list table

[noruzzamans]

Trac Ticket: https://core.trac.wordpress.org/ticket/65860
Trac Ticket: https://core.trac.wordpress.org/ticket/64896

Why this change?

This aligns the codebase with the WordPress PHP Documentation Standards, ensuring that global variables used within functions are properly documented for better static analysis and code clarity.

• Missing Tags: Added missing @global, @PARAM, and @return descriptions.
• Method Summaries: Added summaries for several methods in both list table classes that were previously undocumented.
• Property Docs: Added DocBlocks for class properties ($order, $orderby, etc.).

[github-actions]

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Props noruzzaman, mukesh27, huzaifaalmesbah.

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[github-actions]

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[mukeshpanchal27]

Thanks for the PR!

Correct indentation for other doc changes

[huzaifaalmesbah]

@noruzzamans This PR has merge conflicts with trunk. Could you please rebase/update the branch and resolve the conflicts?

[noruzzamans]

@noruzzamans This PR has merge conflicts with trunk. Could you please rebase/update the branch and resolve the conflicts?

Thanks @huzaifaalmesbah . I have resolved these conflicts. Please review it and let me know if need any improvement.

[noruzzamans]

Hi @mukeshpanchal27 and @huzaifaalmesbah,

Since WordPress 7.1 has been released, I have updated this PR to link to the active WordPress 7.2 documentation improvement ticket: Trac #65860, while keeping the previous reference to Trac #64896.

The branch is up to date with trunk, and all docblocks and alignments in WP_Plugins_List_Table adhere to WordPress PHP Documentation Standards (100% PHPCS clean). Could you please take another look when you have a moment? Thank you!