Options, Meta APIs: Update `@since` version for the `$force_cache` parameter...

Options, Meta APIs: Update `@since` version for the `$force_cache` parameter added for `wp_load_alloptions()` in [46753] to 5.3.1.

See #31245.
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git-svn-id: https://core.svn.wordpress.org/trunk@46579 1a063a9b-81f0-0310-95a4-ce76da25c4cd