fix(o11y): create noop tracer when artifact ID is not set (#12307) #350

Job	Run time
filter	1m 1s
build(8) for gapic-generator-java	11m 40s
build (17)	13m 43s
build (11)	13m 59s
build(21) except self-service clients	12m 24s
build(25) except self-service clients	11m 42s
build(8) except for gapic-generator-java	4m 10s
build(8) for showcase	9m 15s
gapic-generator-java-bom	2m 31s
dependency_analyzer_unit_test	42s
showcase (11)	10m 12s
showcase (21)	10m 6s
unmanaged_dependency_check	8m 35s
showcase (17)	10m 1s
showcase (25)	9m 44s
showcase-clirr	0s
	2h 9m 45s

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