build: improve source map configuration for better debugging #2059

Job	Run time
list	20s
workflow (devkit-core-tests-rerun)	1m 23s
workflow (build-cli)	1m 26s
workflow (devkit-core-tests)	1m 22s
workflow (modules-builder-tests)	1m 50s
workflow (build-unit-tests)	2m 11s
	8m 32s

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