build: remove tools/baseline_browserslist from pnpm workspace #2769

Job	Run time
list	22s
workflow (devkit-core-tests)	1m 18s
workflow (devkit-core-tests-rerun)	1m 21s
workflow (build-cli)	1m 37s
workflow (modules-builder-tests)	1m 47s
workflow (build-unit-tests)	2m 19s
	8m 44s

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