fix: avoid full-reload in scss modules #37992

Job	Run time
Build: ubuntu-latest	1m 22s
Build: windows-2025	57s
Test (language-tools): node-20.9.0, ubuntu-latest	2m 14s
Lint	2m 2s
Test (Smoke): ubuntu-latest (node@22)	4m 41s
Test (E2E): windows-2025 (node@22)	12m 43s
Test (E2E): ubuntu-latest (node@22)	7m 45s
Test (language-tools): node-20.9.0, macos-latest	2m 21s
Test (language-tools): node-20.9.0, windows-latest	4m 20s
Test (Smoke): windows-2025 (node@22)	7m 23s
Test (language-tools): node-22, ubuntu-latest	2m 3s
Test (integrations): ubuntu-latest (node@20)	8m 32s
Test (integrations): ubuntu-latest (node@18)	7m 31s
Test (astro): ubuntu-latest (node@18)	25m 45s
Test (astro): ubuntu-latest (node@20)	18m 6s
Test (astro): macos-14 (node@22)	18m 40s
Test (astro): windows-2025 (node@22)	22m 14s
Test (astro): ubuntu-latest (node@22)	23m 3s
Test (integrations): ubuntu-latest (node@22)	6m 49s
Test (integrations): windows-2025 (node@22)	9m 52s
Test (integrations): macos-14 (node@22)	7m 0s
	3h 15m 23s

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