Update test case to demonstrate spacing fix after tightening preserve behavior.
Update test case to demonstrate spacing fix after tightening preserve behavior.

Actual fix was commit 4d325ffcfcaf7d326e08518d6de087954b9f6dd4.

fixes #507

PiperOrigin-RevId: 334485984

chipsalliance/verible,chipsalliance/verible,chipsalliance/verible,chipsalliance/verible,chipsalliance/verible