chore: tsdown dual build #6635

Job	Run time
Format check	43s
Linter	1m 48s
Integration tests (windows-latest)	1m 33s
Integration tests (macos-latest)	51s
Integration tests (ubuntu-latest)	45s
Build	1m 17s
Unit tests (ubuntu-latest)	1m 16s
Unit tests (windows-latest)	2m 4s
E2E tests (ubuntu-latest)	2m 39s
E2E tests (macos-latest)	2m 36s
E2E tests (windows-latest)	3m 39s
Unit tests (macos-latest)	54s
	20m 5s

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