[v10.1.x] Geomap: Fix tooltip field name regression (#75926)

Geomap: Fix tooltip field name regression (#75511)

(cherry picked from commit 7875dbc6eb)

packages/grafana-data/src/field/fieldState.test.ts

@@ -15,6 +15,11 @@ function checkScenario(scenario: TitleScenario): string {
   return getFieldDisplayName(field, frame, scenario.frames);
 }
 
+jest.mock('lodash', () => ({
+  ...jest.requireActual('lodash'),
+  isEqual: jest.fn().mockImplementation((obj1, obj2) => obj1 === obj2),
+}));
+
 describe('getFrameDisplayName', () => {
   it('Should return frame name if set', () => {
     const frame = toDataFrame({

packages/grafana-data/src/field/fieldState.ts

@@ -1,3 +1,5 @@
+import { isEqual } from 'lodash';
+
 import { DataFrame, Field, TIME_SERIES_VALUE_FIELD_NAME, FieldType, TIME_SERIES_TIME_FIELD_NAME } from '../types';
 import { formatLabels } from '../utils/labels';
 
@@ -162,7 +164,7 @@ function getUniqueFieldName(field: Field, frame?: DataFrame) {
     for (let i = 0; i < frame.fields.length; i++) {
       const otherField = frame.fields[i];
 
-      if (field === otherField) {
+      if (isEqual(field, otherField)) {
         foundSelf = true;
 
         if (dupeCount > 0) {

public/app/features/visualization/data-hover/DataHoverView.tsx

@@ -72,8 +72,11 @@ export const DataHoverView = ({ data, rowIndex, columnIndex, sortOrder, mode, he
       });
     }
 
+    // Sanitize field by removing hovered property to fix unique display name issue
+    const { hovered, ...sanitizedField } = field;
+
     displayValues.push({
-      name: getFieldDisplayName(field, data),
+      name: getFieldDisplayName(sanitizedField, data),
       value,
       valueString: formattedValueToString(fieldDisplay),
       highlight: field.hovered,