Filter out disabled display extenders on save

Filter out disabled display extenders on save, add test coverage to ensure that they are filtered out

Closes #3460063

changed target branch from 11.0.x to 11.x

added 266 commits

• b372f0ae...5a3ca127 - 265 commits from branch project:11.x
• 45e1093d - Merge branch 'refs/heads/11.x' into 3460063-views-display-extenders-filter

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