Deactivate button and search filter on plugin list page

[snehapatil2001]

Trac ticket: https://core.trac.wordpress.org/ticket/62998

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This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.

[github-actions]

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Props snehapatil02, mindctrl.

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[github-actions]

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[mindctrl]

@snehapatil2001 can you bring this patch up to date with trunk?