feat(@angular/build): drop support for TypeScript older than 5.8 #1359

Job	Run time
build	11s
lint	2m 48s
e2e_windows (windows-2025, 22, npm, 0)	37s
e2e_windows (windows-2025, 22, npm, 1)	36s
e2e_windows (windows-2025, 22, npm, 2)	28s
e2e_windows (windows-2025, 22, npm, 3)	27s
e2e_windows (windows-2025, 22, npm, 4)	51s
e2e_windows (windows-2025, 22, npm, 5)	36s
e2e_windows (windows-2025, 22, esbuild, 0)	38s
e2e_windows (windows-2025, 22, esbuild, 1)	35s
e2e_windows (windows-2025, 22, esbuild, 2)	51s
e2e_windows (windows-2025, 22, esbuild, 3)	58s
e2e_windows (windows-2025, 22, esbuild, 4)	37s
e2e_windows (windows-2025, 22, esbuild, 5)	35s
publish-snapshots	0s
Browser Compatibility Tests	0s
test	0s
e2e	0s
e2e-package-managers	0s
e2e-snapshots	0s
	10m 48s

Provide feedback