egardner: Backport for [[gerrit:1300906|Restore MediaViewer toggle in Special:Preferences (T428742)]] synced to the testservers (see https://wikitech.wikimedia.org/wiki/Mwdebug). Changes can now be verified there.
did:plc:b5rdeo6yac55pf4dasu2iogt
June 11, 2026
egardner: Backport for [[gerrit:1300906|Restore MediaViewer toggle in Special:Preferences (T428742)]] synced to the testservers (see https://wikitech.wikimedia.org/wiki/Mwdebug). Changes can now be verified there.
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