Your choice.
KB5031445 is an update preview, so strictly speaking it doesn't matter whether it's installed or not, as any features it contains will be present in this month's full update.
Personally I don't bother with update previews, since they have a tendency to be a bit more buggy than the full updates. In essence they're a last final "beta" test before the release of the full update. They've been tested of course, but you can't really test for all eventualities, so by releasing a preview Microsoft get a chance to see whether it causes problems, and they're then able to resolve those problems before releasing the full monthly update.
If you do decide to install KB5031445, please let me know if successful, or post your CBS.log if unsuccessful.