fix: update prepack hook to account for ts scenario #750

Job	Run time
Lint JS	21s
Tests: Type Check	15s
Slow tests: defaults with npm	2m 28s
Tests (addon-location)	58s
Slow tests: defaults with yarn	1m 26s
Tests (test-app-location)	48s
Slow tests: typescript with npm	2m 43s
Slow tests: defaults with pnpm	1m 2s
Tests (addon-only)	26s
Slow tests: typescript with yarn	2m 1s
Tests (monorepo with npm)	2m 0s
Slow tests: typescript with pnpm	1m 26s
Tests (monorepo with yarn)	1m 40s
Tests (monorepo with pnpm)	50s
Tests (rollup-build)	1m 5s
Tests (declarations-configuration)	39s
	20m 8s

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