Experiment: add moveBefore rather than insertBefor when available

[JoviDeCroock]

One issue is that the selection-range is reset when moveBefore is used, heh looks like we found a browser bug https://stackblitz.com/edit/vitejs-vite-k5ibmktp?file=index.html,src%2Fmain.js,src%2Fstyle.css&terminal=dev

[github-actions]

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[github-actions]

Size Change: +186 B (+0.39%)

Total Size: 47.7 kB

Filename	Size	Change
dist/preact.js	4.78 kB	+66 B (+1.4%)
dist/preact.mjs	4.79 kB	+62 B (+1.31%)
dist/preact.umd.js	4.84 kB	+58 B (+1.21%)

ℹ️ View Unchanged

Filename	Size
compat/dist/compat.js	3.9 kB
compat/dist/compat.mjs	3.82 kB
compat/dist/compat.umd.js	3.95 kB
debug/dist/debug.js	3.9 kB
debug/dist/debug.mjs	3.9 kB
debug/dist/debug.umd.js	3.98 kB
devtools/dist/devtools.js	263 B
devtools/dist/devtools.mjs	273 B
devtools/dist/devtools.umd.js	348 B
hooks/dist/hooks.js	1.53 kB
hooks/dist/hooks.mjs	1.56 kB
hooks/dist/hooks.umd.js	1.6 kB
jsx-runtime/dist/jsxRuntime.js	892 B
jsx-runtime/dist/jsxRuntime.mjs	861 B
jsx-runtime/dist/jsxRuntime.umd.js	966 B
test-utils/dist/testUtils.js	473 B
test-utils/dist/testUtils.mjs	473 B
test-utils/dist/testUtils.umd.js	555 B

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