DashboardScene: Fixes react panels with old angular options (#86256)

* DashboardScene: Fixes react panels with old angular options

* Update

.betterer.results

@@ -2520,6 +2520,9 @@ exports[`better eslint`] = {
       [0, 0, 0, "Unexpected any. Specify a different type.", "1"],
       [0, 0, 0, "Do not use any type assertions.", "2"]
     ],
+    "public/app/features/dashboard-scene/serialization/angularMigration.test.ts:5381": [
+      [0, 0, 0, "Unexpected any. Specify a different type.", "0"]
+    ],
     "public/app/features/dashboard-scene/serialization/transformSaveModelToScene.test.ts:5381": [
       [0, 0, 0, "Unexpected any. Specify a different type.", "0"],
       [0, 0, 0, "Unexpected any. Specify a different type.", "1"],

public/app/features/dashboard-scene/serialization/angularMigration.test.ts

@@ -33,4 +33,24 @@ describe('getAngularPanelMigrationHandler', () => {
       expect(mutatedModel.fieldConfig).toEqual({ defaults: { unit: 'bytes' }, overrides: [] });
     });
   });
+
+  describe('Given a react panel with old angular properties', () => {
+    it('Should pass panel model with old angular properties', () => {
+      const reactPlugin = getPanelPlugin({ id: 'dashlist' });
+
+      const oldModel = new PanelModel({
+        angularProp: 'old name',
+        type: 'dashlist',
+      });
+
+      const mutatedModel: any = {
+        type: 'dashlist',
+        options: {},
+      };
+
+      getAngularPanelMigrationHandler(oldModel)(mutatedModel, reactPlugin);
+
+      expect(mutatedModel.angularProp).toEqual('old name');
+    });
+  });
 });

public/app/features/dashboard-scene/serialization/angularMigration.ts

@@ -1,3 +1,5 @@
+import { defaults } from 'lodash';
+
 import { PanelModel as PanelModelFromData, PanelPlugin } from '@grafana/data';
 import { autoMigrateAngular, PanelModel } from 'app/features/dashboard/state/PanelModel';
 
@@ -8,6 +10,10 @@ export function getAngularPanelMigrationHandler(oldModel: PanelModel) {
       return;
     }
 
+    if (!oldModel.options || Object.keys(oldModel.options).length === 0) {
+      defaults(panel, oldModel.getOptionsToRemember());
+    }
+
     if (oldModel.autoMigrateFrom) {
       const wasAngular = autoMigrateAngular[oldModel.autoMigrateFrom] != null;
       const oldOptions = oldModel.getOptionsToRemember();