Fix the selected entry behavior by propagating the focusedEntryId through WebSocket (before #452) TRA-3983 (#513)

* Revert the select entry behavior into its original state RACING! (before #452) [TRA-3983 alternative 3]

* Remove the remaining `forceSelect`(s)

* Add a missing `focusedEntryId` prop

* Fix the race condition

* Propagate the `focusedEntryId` through WebSocket to prevent racing

agent/pkg/models/models.go

@@ -57,6 +57,11 @@ type WebSocketStartTimeMessage struct {
 	Data int64 `json:"data"`
 }
 
+type WebSocketFocusEntryMessage struct {
+	*shared.WebSocketMessageMetadata
+	Id int `json:"id"`
+}
+
 func CreateBaseEntryWebSocketMessage(base map[string]interface{}) ([]byte, error) {
 	message := &WebSocketEntryMessage{
 		WebSocketMessageMetadata: &shared.WebSocketMessageMetadata{
@@ -117,6 +122,16 @@ func CreateWebsocketStartTimeMessage(base int64) ([]byte, error) {
 	return json.Marshal(message)
 }
 
+func CreateWebsocketFocusEntry(id int) ([]byte, error) {
+	message := &WebSocketFocusEntryMessage{
+		WebSocketMessageMetadata: &shared.WebSocketMessageMetadata{
+			MessageType: shared.WebSocketMessageFocusEntry,
+		},
+		Id: id,
+	}
+	return json.Marshal(message)
+}
+
 // ExtendedHAR is the top level object of a HAR log.
 type ExtendedHAR struct {
 	Log *ExtendedLog `json:"log"`