chore: fix label migration and css shadow migration

[vladimirpotekhin]

part of #8839

[lumberjack-bot]

Pull request was closed ✔️

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[bundlemon]

BundleMon

Unchanged files (5)

Status	Path	Size	Limits
✅	demo/browser/main.(hash).js	287.91KB	+10%
✅	demo/browser/vendor.(hash).js	247.14KB	+10%
✅	demo/browser/runtime.(hash).js	42.74KB	+10%
✅	demo/browser/styles.(hash).css	16.17KB	+10%
✅	demo/browser/polyfills.(hash).js	11.18KB	+10%

No change in files bundle size

Unchanged groups (1)

Status	Path	Size	Limits
✅	demo/browser/*..js	7.09MB	-

Final result: ✅

View report in BundleMon website ➡️

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