In general, colorful app icons are 48px in size. When apps offer other
colorful versions at other sizes, it offers the benefit of
pixel-perfection at those sizes, with the drawback of uneven sizing
between app icons in UIs that snap icons to the next closest existing
size, like the Task Manager does.
Thus there would be a preference list of ideal outcomes:
1. All app icon include versions for all sizes. Drawback: tons of work
that, realistically, won't happen.
2. All app icons only include the 48px version. Drawback: blurriness
when app icons are displayed at sizes other than 48px when using a
low DPI screen.
3. Some app icons include colorful versions at some random sizes.
Drawback: still get blurriness for *most* app icons displayed at
non-48px size, but also get mismatched sizes in the Task Manager and
potentially other places too.
Right now we're at outcome 3. This MR moves Breeze icons to outcome 2 for
icons of actual apps. Outcome 1 would be ideal, but would be orders of
magnitude more work that I don't foresee materializing.
CCBUG: 508299
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