Support for mask-* CSS properties

[rcj-siteimprove]

Support for mask CSS shorthand property and its longhands.

Longhands:

• mask-clip
• mask-composite
• mask-image
• mask-mode
• mask-origin
• mask-position
• mask-repeat
• mask-size

Shorthand:

• mask

[changeset-bot]

⚠️ No Changeset found

Latest commit: a4853eb

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[rcj-siteimprove]

!pr extract