refactor(yaml): inline `readDoubleQuotedScalar()` #14838

Job	Run time
publish-dry-run	11s
lint (ubuntu-latest)	2m 47s
test (v1.x, ubuntu-latest)	1m 3s
lint (windows-latest)	3m 21s
test (v1.x, windows-latest)	1m 20s
test-node (latest, ubuntu-latest)	12s
wasm (crypto/_wasm)	6s
test (v1.x, macOS-latest)	1m 5s
test (canary, ubuntu-latest)	1m 39s
test (canary, windows-latest)	2m 1s
test (canary, macOS-latest)	1m 35s
	15m 20s

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