Fix/59712 upgrader bugs

[peterwilsoncc]

https://core.trac.wordpress.org/ticket/59712#ticket

[costdev]

Thanks @peterwilsoncc! Just an @ticket update for the test. Pre-approving 👍

[mukeshpanchal27]

Thanks @peterwilsoncc for the PR. Changes look good to me.

[github-actions]

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Props peterwilsoncc, costdev, mukesh27.

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[github-actions]

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[costdev]

Thanks for the updates @peterwilsoncc! LGTM 👍

[peterwilsoncc]

Merged in r58022 / 5ae18c4