Make HighContrastInverse a dark variant

Make HighContrastInverse available as the dark variant of HighContrast,
in addition to being a standalone theme. This regularizes our theme
variants, and doesn't hurt.
13 jobs for matthiasc/for-master in 24 minutes and 12 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  .Pre
passed #1088691
style-check-diff

00:08:25

 
  Build
passed #1088748
fedora-x86_64

00:04:53

passed #1088694
installed-tests

00:13:58

passed #1088696
macos
macos

00:12:36

passed #1088695
win32-ps
msys2-mingw64

00:06:17

passed #1088693
release-build

00:14:05

failed #1088692
fedora-x86_64

00:16:14

 
  Analysis
failed #1088698
asan allowed to fail
asan-build

00:12:14

passed #1088697
static-scan

00:19:17

 
  Docs
passed #1088699
reference

00:08:13

 
  Flatpak
manual #1088700
flatpak allowed to fail manual
flatpak-manual:demo
manual #1088702
flatpak allowed to fail manual
flatpak-manual:icon-browser
manual #1088701
flatpak allowed to fail manual
flatpak-manual:widget-factory
 
Name Stage Failure
failed
asan-build Analysis
 - css: 202 total, 202 pass, 0 fail
Processing gtk suite a11y:
- a11y: 22 total, 22 pass, 0 fail
Processing gtk suite tools:
- tools: 4 total, 3 pass, 1 fail
Processing gtk suite reftest:
- reftest: 135 total, 135 pass, 0 fail
Cleaning up file based variables
ERROR: Job failed: exit code 1