Add missing schema

Closes #3387476

added 4 commits

• 75b40a0a...c47e5c86 - 3 commits from branch project:8.x-1.x
• a7df3003 - Merge branch language_suggestion:8.x-1.x into 3387476-fix-missing-schema

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added 3 commits

• a7df3003...5e8bddc6 - 2 commits from branch project:8.x-1.x
• 7856ebce - Add missing schema

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merged