* Deprecate the `l10n` property on `communityEventsData`.
* Introduce `version` parameter for `deprecateL10nObject` and backfill the version for deprecated objects in 5.5.0.
* Add a noop version of `deprecateL10nObject` for QUnit testing.
Fixes#51498.
git-svn-id: https://develop.svn.wordpress.org/trunk@49151 602fd350-edb4-49c9-b593-d223f7449a82