Resolve #3214109 "Add an EntityReferenceSelection plugin for block references"

Closes #3214109

added 29 commits

• 9db6f477...b078bec0 - 27 commits from branch project:11.x
• 9714352e - Merge branch '11.x' into 3214109-add-an-entityreferenceselection
• 84ffebee - Fixing test case failures.

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added 1 commit

• ff0a2b6b - Remove block from the provider data list because we've removed the required...

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