Backport super-cache 1.12.2 Changes

[donnchawp]

Proposed changes:

Backports changes for super-cache 1.12.2

Other information:

• [ ] Have you written new tests for your changes, if applicable?
• [ ] Have you checked the E2E test CI results, and verified that your changes do not break them?
• [ ] Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

N/a

Does this pull request change what data or activity we track or use?

No

Testing instructions:

Proofread changes.

[github-actions[bot]]

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• Next scheduled release: July 2, 2024.
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