chore: tsdown dual build #6634

Job	Run time
Linter	2m 38s
Integration tests (windows-latest)	3m 15s
Integration tests (ubuntu-latest)	1m 31s
Unit tests (ubuntu-latest)	1m 8s
Build	1m 28s
Unit tests (windows-latest)	2m 11s
E2E tests (ubuntu-latest)	2m 38s
Integration tests (macos-latest)	1m 36s
Format check	37s
E2E tests (windows-latest)	3m 11s
E2E tests (macos-latest)	2m 37s
Unit tests (macos-latest)	1m 7s
	23m 57s

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