Add support for nested CSS in ts, js and tsx #3598

Job	Run time
Test with MIME database	1m 58s
Test aarch64-pc-windows-msvc	2m 21s
Test aarch64-apple-darwin	1m 52s
Output Regression Test	2m 31s
Test x86_64-apple-darwin	6m 1s
Check Linux Packaging	2m 4s
Rustfmt	17s
Test x86_64-unknown-linux-gnu	2m 12s
Test x86_64-pc-windows-msvc	2m 25s
Test aarch64-unknown-linux-gnu	3m 25s
Typo Check	12s
Test Linux (latest stable Rust)	1m 56s
Actionlint	14s
Test x86_64-unknown-linux-musl	2m 38s
	30m 6s

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