Fix #18609: Add language.`3.4` and language.`3.4-migration`.#18610

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bishabosha merged 1 commit intoscala:mainfrom dotty-staging:language-3.4

Sep 28, 2023

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Commits on Sep 28, 2023

Fix scala#18609 : Add language.3.4 and language.3.4-migration.
sjrd
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