wmde-fisch, awight, dcausse: Backport for [[gerrit:1283101|VE: Avoid counting all refs when listIndex is undefined (T425433)]], [[gerrit:1283037|search: fix alt. completion indices to test keyword tokenizer (T420427)]], [[gerrit:1283041|search: enable Latin-to-Devanagari transliteration second-chance (T425018)]] synced to the testservers (see https://wikitech.wikimedia.org/wiki/Mwdebug). Changes can