refactor: await `silentNpm` #1798

Job	Run time
build	14s
lint	2m 8s
e2e_windows (windows-2025, 22, npm, 5)	44s
e2e_windows (windows-2025, 22, npm, 3)	31s
e2e_windows (windows-2025, 22, esbuild, 0)	51s
e2e_windows (windows-2025, 22, npm, 2)	51s
e2e_windows (windows-2025, 22, npm, 0)	46s
e2e_windows (windows-2025, 22, esbuild, 2)	31s
e2e_windows (windows-2025, 22, esbuild, 1)	29s
e2e_windows (windows-2025, 22, npm, 1)	40s
e2e_windows (windows-2025, 22, npm, 4)	43s
e2e_windows (windows-2025, 22, esbuild, 4)	41s
e2e_windows (windows-2025, 22, esbuild, 5)	51s
e2e_windows (windows-2025, 22, esbuild, 3)	32s
test	0s
e2e-package-managers	0s
publish-snapshots	0s
e2e-snapshots	0s
Browser Compatibility Tests	0s
e2e	0s
	10m 32s

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