fix(o11y): do not record error.type in successful runs #573

Job	Run time
filter	1m 2s
build (17)	13m 43s
showcase-clirr	5m 31s
build(8) for showcase	9m 15s
gapic-generator-java-bom	2m 10s
build (11)	13m 49s
build(21) except self-service clients	13m 5s
build(8) except for gapic-generator-java	3m 52s
build(8) for gapic-generator-java	11m 11s
build(25) except self-service clients	11m 54s
showcase (17)	10m 47s
dependency_analyzer_unit_test	1m 19s
unmanaged_dependency_check	9m 40s
showcase (25)	11m 4s
showcase (21)	10m 3s
showcase (11)	9m 59s
	2h 18m 24s

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