Fix asyncErrorChannel deadlock on shutdown

Signed-off-by: WHOIM1205 <rathourprateek8@gmail.com>

Author: WHOIM1205

otelcol/collector.go

@@ -144,7 +144,7 @@ func NewCollector(set CollectorSettings) (*Collector, error) {
 		// Per signal.Notify documentation, a size of the channel equaled with
 		// the number of signals getting notified on is recommended.
 		signalsChannel:             make(chan os.Signal, 3),
-		asyncErrorChannel:          make(chan error),
+		asyncErrorChannel:          make(chan error, 1),
 		configProvider:             configProvider,
 		bc:                         bc,
 		updateConfigProviderLogger: cc.SetCore,