Fix data race when sending trace data to reporter.

[mrproliu]

No description provided.

[Copilot]

Pull request overview

Fixes a data race / crash (apache/skywalking#13885) where the reporter goroutine marshalled a SegmentObject whose Tags/Logs slices were still being mutated by the originating goroutine (e.g. a GORM session reused across goroutines), faulting inside protobuf size computation. TransformSegmentObject now deep-copies tag and log entries so the queued protobuf message shares no mutable storage with the live span. Send/marshal paths in the gRPC and Kafka reporters are wrapped with per-message panic recovery as a defense-in-depth measure, and a new make test-race target runs new race-only regression tests in CI.

Changes:

• Deep-copy Tags and Logs in Transform.TransformSegmentObject via new copyKeyStringValuePairs/copyLogs helpers.
• Wrap each per-message proto.Marshal (Kafka) and stream.Send (gRPC) call in a recover helper so a single bad message doesn't tear down the send loop.
• Add //go:build race regression tests under plugins/core, a make test-race target, and a CI step that invokes it.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
plugins/core/reporter/transform.go	Adds deep-copy helpers and uses them for span Tags/Logs when building the protobuf segment.
plugins/core/reporter/grpc/grpc.go	Adds sendWithRecover and applies it to tracing, metrics, log, and profile stream sends.
plugins/core/reporter/kafka/kafka.go	Adds marshalWithRecover and applies it to tracing, metrics, and log marshal calls.
plugins/core/segment_datarace_test.go	New race-only regression tests covering segment/reporter decoupling and panic-free reporting under concurrent span mutation.
Makefile	New test-race target iterating non-./test/* modules running TestRace* under -race.
.github/workflows/skywalking-go.yaml	Runs make test-race between make test and make lint.
CHANGES.md	Notes the bug fix in the bug-fix section.

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