fix(@angular-devkit/schematics): properly resolve relative schematics… #1444

Job	Run time
lint	2m 8s
build	11s
e2e_windows (windows-2025, 22, npm, 0)	28s
e2e_windows (windows-2025, 22, npm, 1)	56s
e2e_windows (windows-2025, 22, npm, 3)	1m 20s
e2e_windows (windows-2025, 22, esbuild, 1)	30s
e2e_windows (windows-2025, 22, npm, 4)	28s
e2e_windows (windows-2025, 22, esbuild, 5)	27s
e2e_windows (windows-2025, 22, esbuild, 0)	27s
e2e_windows (windows-2025, 22, esbuild, 4)	29s
e2e_windows (windows-2025, 22, esbuild, 3)	47s
e2e_windows (windows-2025, 22, npm, 2)	46s
e2e_windows (windows-2025, 22, npm, 5)	28s
e2e_windows (windows-2025, 22, esbuild, 2)	28s
Browser Compatibility Tests	0s
publish-snapshots	0s
test	0s
e2e-snapshots	0s
e2e	0s
e2e-package-managers	0s
	9m 53s

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