Apply T312258 to wmf wikis
# **ALTERs to run:** https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Translate/+/817872/2/sql/mysql/patch-translate_messageindex-unique-to-pk.sql
# **Where to run those changes:** Active according to the config: advisorswiki, amwikimedia, bewikimedia, betawikiversity, brwikimedia, bdwikimedia, cawikimedia, collabwiki, commonswiki, testcommonswiki, foundationwiki, frwiktionary, gewikimedia, grwikimedia, hiwikimedia, idwikimedia, incubatorwiki, legalteamwiki, maiwikimedia, mediawikiwiki, metawiki, nowikimedia, otrs_wikiwiki, outreachwiki, plwikimedia, ruwikimedia, punjabiwikimedia, sourceswiki, specieswiki, sewikimedia, testwiki, uawikimedia, wbwikimedia, wikidata, wikimania2012wiki, wikimania2013wiki, wikimania2014wiki, wikimania2015wiki, wikimania2016wiki, wikimania2017wiki, wikimania2018wiki, wikimaniawiki
# **When to run those changes:** any time
# **If the schema change is backwards compatible:** Yes
# **If the schema change has been tested already on some of the test/beta wikis:** beta already running with the new schema
# **if the data should be made available on the labs replicas and/or dumps:** no change of the existing rules
Due to a bug in the schema change generator (T314138) the DROP + ALTER should be rewritten to be atomic
Progress
[] s3 (wikis T314140#8115150)
[x] s4
[] s7 (frwiktionary and metawiki)
[] s8