Move IS_NON_DIMENSIONAL to compat

[marvinhagemeister]

This PR moves the IS_NON_DIMENSIONAL regex to compat as described here: #2621

• Move regex to compat
• Add migration warning to preact/debug
• Integrate enhancements from IS_NON_DIMENSIONAL has false positives and false negatives #2607
• Go through CSS spec and add tests for every numeric property

[github-actions]

Size Change: +552 B (1%)

Total Size: 40.8 kB

Filename	Size	Change
compat/dist/compat.js	3.34 kB	+143 B (4%)
compat/dist/compat.module.js	3.36 kB	+135 B (4%)
compat/dist/compat.umd.js	3.39 kB	+141 B (4%)
debug/dist/debug.js	3.2 kB	+204 B (6%)	🔍
debug/dist/debug.module.js	3.18 kB	+202 B (6%)	🔍
debug/dist/debug.umd.js	3.29 kB	+209 B (6%)	🔍
dist/preact.js	3.88 kB	-119 B (3%)
dist/preact.min.js	3.9 kB	-125 B (3%)
dist/preact.module.js	3.9 kB	-113 B (2%)
dist/preact.umd.js	3.93 kB	-125 B (3%)

ℹ️ View Unchanged

Filename	Size	Change
devtools/dist/devtools.js	185 B	0 B
devtools/dist/devtools.module.js	195 B	0 B
devtools/dist/devtools.umd.js	261 B	0 B
hooks/dist/hooks.js	1.09 kB	0 B
hooks/dist/hooks.module.js	1.11 kB	0 B
hooks/dist/hooks.umd.js	1.17 kB	0 B
test-utils/dist/testUtils.js	437 B	0 B
test-utils/dist/testUtils.module.js	439 B	0 B
test-utils/dist/testUtils.umd.js	515 B	0 B

_{compressed-size-action}

[coveralls]

Coverage increased (+0.001%) to 99.8% when pulling 8d86a49 on css-px into 469da09 on master.