Add support for kncwiki #2989

Job	Run time
build (pypy3.10, wikipedia:en)	21m 52s
build (pypy3.10, wikisource:zh)	19m 31s
build (3.8, wikipedia:en)	25m 10s
build (3.8, wikisource:zh)	13m 26s
build (3.9, wikipedia:en)	20m 2s
build (3.9, wikisource:zh)	18m 48s
build (3.10, wikipedia:en)	20m 0s
build (3.10, wikisource:zh)	14m 56s
build (3.11, wikipedia:en)	19m 43s
build (3.11, wikisource:zh)	18m 31s
build (3.12, wikipedia:en)	20m 54s
build (3.12, wikisource:zh)	13m 42s
build (3.13, wikipedia:en)	17m 38s
build (3.13, wikisource:zh)	15m 26s
build (3.8, wikipedia:test)	20m 39s
build (3.8, false, wpbeta, en)	18m 44s
build (3.8, false, wpbeta, zh)	21m 49s
build (3.9, wsbeta:en)	17m 46s
build (3.8, wikidata:test)	16m 20s
build (3.10, wiktionary:ar, true)	21m 24s
build (3.8, wikidata:wikidata)	27m 38s
build (3.9, wowwiki:uk)	17m 40s
build (3, wikipedia:de, macOS-latest)	20m 6s
build (pypy3.8, wikipedia:en, ubuntu-22.04)	24m 13s
build (pypy3.8, wikisource:zh, ubuntu-22.04)	21m 42s
build (3.14-dev, wikipedia:en, ubuntu-22.04)	19m 7s
build (3.14-dev, wikisource:zh, ubuntu-22.04)	18m 35s
	8h 45m 22s

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