chore: adds support to parse "transparent" token references #11773

Job	Run time
Capture changed-files	2s
Testing	0s
Compare / Fetch & validate build artifacts (marissahuysentruyt/css-451-rgb-mapping-opacity)	3m 59s
Publish / Publish	5m 45s
Compare / Fetch & validate build artifacts (main)	3m 51s
Verify (macos-latest, 20) / Build (macos-latest, 20, false)	3m 56s
Verify (ubuntu-latest, 20) / Build (ubuntu-latest, 20, false)	3m 55s
Plugin tests	48s
Lint / Lint	3m 51s
Compare / Compare compiled assets	1m 13s
	27m 20s

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