[DebugExporter] Add EventName from LogRecord to output #25815

Job	Run time
govulncheck	46s
setup-environment	13s
checks	2m 6s
test-coverage	5m 52s
lint	4m 4s
unittest-matrix (ubuntu-latest, ~1.23)	2m 11s
cross-build-collector (darwin, amd64)	53s
unittest-matrix (ubuntu-latest, ~1.22)	2m 13s
cross-build-collector (darwin, arm64)	53s
cross-build-collector (linux, 386)	45s
cross-build-collector (linux, amd64)	41s
cross-build-collector (linux, arm64)	47s
cross-build-collector (linux, ppc64le)	49s
cross-build-collector (linux, arm, 7)	39s
cross-build-collector (linux, s390x)	40s
cross-build-collector (windows, 386)	38s
cross-build-collector (windows, amd64)	40s
unittest	1s
	24m 51s

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