Adjust action metrics (#5043)

<!-- Describe what has changed in this PR -->
**What changed?**
Adjust action metrics

<!-- Tell your future self why have you made these changes -->
**Why?**
To reflect # change.

<!-- How have you verified this change? Tested locally? Added a unit
test? Checked in staging env? -->
**How did you test it?**
Run locally and verify metrics.

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change to production? -->
**Potential risks**
No

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**Is hotfix candidate?**

common/rpc/interceptor/telemetry.go

@@ -221,8 +221,10 @@ func (ti *TelemetryInterceptor) emitActionMetric(
 				case enums.COMMAND_TYPE_RECORD_MARKER:
 					// handle RecordMarker command, they are used for localActivity, sideEffect, versioning etc.
 					hasMarker = true
-					markerName := command.GetRecordMarkerCommandAttributes().GetMarkerName()
-					metricsHandler.Counter(metrics.ActionCounter.GetMetricName()).Record(1, metrics.ActionType("command_RecordMarker_"+markerName))
+				case enums.COMMAND_TYPE_START_CHILD_WORKFLOW_EXECUTION:
+					// Each child workflow counts as 2 actions. We use separate tags to track them separately.
+					metricsHandler.Counter(metrics.ActionCounter.GetMetricName()).Record(1, metrics.ActionType("command_"+command.CommandType.String()))
+					metricsHandler.Counter(metrics.ActionCounter.GetMetricName()).Record(1, metrics.ActionType("command_"+command.CommandType.String()+"_Extra"))
 				default:
 					// handle all other command action
 					metricsHandler.Counter(metrics.ActionCounter.GetMetricName()).Record(1, metrics.ActionType("command_"+command.CommandType.String()))