Take UID and langcode into account in user_requirements()

Closes #3490639

added 387 commits

• 50b589a2...b25bc52e - 386 commits from branch project:11.x
• 76edba12 - Take UID and langcode into account in user_requirements()

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added 305 commits

• 76edba12...1a2079a4 - 304 commits from branch project:11.x
• 9c979b06 - Merge branch '11.x' into 3490639-checking-for-duplicate

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added 1 commit

• df561c04 - Added a test

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