Fix WHS reporting

[quetric]

WHS was being picked up from the wrong column in the timing report. This fixes that and adds a test.

[github-actions]

Coverage

component	covered	total		vs dev
linker	1540	3863	39.9%	+0.6 pts
vrt	10889	14340	75.9%	no change
vrtd	1490	4512	33.0%	no change

_{Lines covered at 6940681, compared with the most recent successful dev run. Full HTML reports are attached to the test runs as artifacts.}