chore: tsdown dual build #6641

Job	Run time
Format check	41s
Linter	1m 29s
Unit tests (ubuntu-latest)	1m 8s
Unit tests (windows-latest)	2m 4s
Unit tests (macos-latest)	1m 4s
Integration tests (windows-latest)	1m 31s
Integration tests (ubuntu-latest)	39s
E2E tests (windows-latest)	2m 56s
E2E tests (ubuntu-latest)	5m 19s
Integration tests (macos-latest)	2m 6s
E2E tests (macos-latest)	6m 31s
Build	1m 25s
	26m 53s

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