Add tests for comments in more expression-like contexts (#2000) #1527

Job	Run time
Language \| Dart Sass \| Dart stable	1m 10s
Language \| Dart Sass \| Dart dev	1m 35s
JS API \| Pure JS \| Browser	1m 44s
JS API \| Pure JS \| Node lts/* \| ubuntu-latest	1m 27s
JS API \| Embedded \| Node lts/* \| ubuntu-latest	4m 51s
JS API \| Pure JS \| Node lts/* \| windows-latest	3m 43s
JS API \| Embedded \| Node lts/* \| windows-latest	6m 58s
Lint spec files	15s
JS API \| Pure JS \| Node lts/* \| macos-latest	1m 44s
JS API \| Embedded \| Node lts/* \| macos-latest	6m 17s
Static analysis	24s
JS API \| Pure JS \| Node lts/-1 \| ubuntu-latest	1m 53s
JS API \| Embedded \| Node lts/-1 \| ubuntu-latest	5m 4s
Unit tests	36s
JS API \| Embedded \| Node lts/-2 \| ubuntu-latest	4m 46s
JS API \| Pure JS \| Node lts/-2 \| ubuntu-latest	1m 30s
JS API \| Embedded \| Node lts/-3 \| ubuntu-latest	5m 7s
JS API \| Pure JS \| Node lts/-3 \| ubuntu-latest	1m 24s
	50m 28s

Provide feedback