fix: update prepack hook to account for ts scenario #765

Job	Run time
Slow tests: defaults with npm	2m 32s
Lint JS	21s
Tests: Type Check	22s
Tests (addon-location)	1m 2s
Slow tests: defaults with yarn	1m 39s
Tests (test-app-location)	1m 4s
Slow tests: defaults with pnpm	1m 39s
Slow tests: typescript with npm	3m 19s
Tests (addon-only)	29s
Slow tests: typescript with yarn	2m 5s
Tests (monorepo with npm)	2m 4s
Slow tests: typescript with pnpm	1m 24s
Tests (monorepo with yarn)	1m 26s
Tests (monorepo with pnpm)	1m 4s
Tests (rollup-build)	1m 0s
Tests (declarations-configuration)	38s
	22m 8s

Provide feedback