Flag setting `height` in `px` values

[Volker-E]

That's an accessibility anti-pattern. For example when user overrides text default size. And should only be allowed with disable line. Latest initiation was https://gerrit.wikimedia.org/r/c/wvui/+/651245

[Volker-E]

Similar concern as in #104.

[jdforrester]

There are an awful lot of hits for setting height in pixels: https://codesearch-beta.wmcloud.org/deployed/?q=height%3A+%5Cd%2Bpx&excludeFiles=lib

Do we want to do a series of fixes first, or are all ~1000 of those hits going to have to be annotated?

[edg2s]

Some valid exceptions from that list:

• height:1px hacks
• setting the same height as fixed size image, where it is known there is plenty of space for the text