feat: persist generated coder_app id (#18487)

coderd/provisionerdserver/provisionerdserver.go

@@ -2595,8 +2595,19 @@ func InsertWorkspaceResource(ctx context.Context, db database.Store, jobID uuid.
 				openIn = database.WorkspaceAppOpenInSlimWindow
 			}
 
+			var appID string
+			if app.Id == "" || app.Id == uuid.Nil.String() {
+				appID = uuid.NewString()
+			} else {
+				appID = app.Id
+			}
+			id, err := uuid.Parse(appID)
+			if err != nil {
+				return xerrors.Errorf("parse app uuid: %w", err)
+			}
+
 			dbApp, err := db.InsertWorkspaceApp(ctx, database.InsertWorkspaceAppParams{
-				ID:          uuid.New(),
+				ID:          id,
 				CreatedAt:   dbtime.Now(),
 				AgentID:     dbAgent.ID,
 				Slug:        slug,