fix: batch status reporting after complete (#17852)

batch status can perpetually wait after completion
due to a race between the MetricsHandler() returning
the active metrics in intervals of 1sec and delete
of metrics after job completion.

this PR ensures that we keep the 'status' around
for a while, i.e upto 24hrs for all the batch jobs.

cmd/globals.go

@@ -399,6 +399,9 @@ var (
 
 	// Set last client perf extra time (get lock, and validate)
 	globalLastClientPerfExtraTime int64
+
+	// Captures all batch jobs metrics globally
+	globalBatchJobsMetrics batchJobMetrics
 	// Add new variable global values here.
 )