refactor(scripts): prefer undefined over null for absent values #904

Job	Run time
Load Tool Versions	4s
Run CI Pipeline / 🔍 Type Check	13s
Run CI Pipeline / 🧹 Lint Check	18s
Run CI Pipeline / 🧪 Test Matrix	0s
E2E Tests (Shard ${{ matrix.shard }}/2)	-1s
Unit Tests (Shard ${{ matrix.shard }}/3)	-1s
Integration Tests	-1s
	32s

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