fix: `ConfigProvider` merge form validateMessages not inheriting from parent bug (#43239)

* test(CP): add Form unit case

* fix:  `ConfigProvider ` merge form validateMessages not inheriting from parent bug

components/config-provider/__tests__/form.test.tsx

@@ -148,6 +148,42 @@ describe('ConfigProvider.Form', () => {
         'age must be between 18-99',
       );
     });
+
+    // https://github.com/ant-design/ant-design/issues/43210
+    it('should merge parent ConfigProvider validateMessages', async () => {
+      const MyForm = () => (
+        <Form>
+          <Form.Item name="name" label="Name" rules={[{ required: true }]}>
+            <Input />
+          </Form.Item>
+          <Button type="primary" htmlType="submit">
+            Submit
+          </Button>
+        </Form>
+      );
+
+      const { container, getAllByRole, getAllByText } = render(
+        <ConfigProvider>
+          <MyForm />
+          <ConfigProvider form={{ validateMessages: { required: 'Required' } }}>
+            <MyForm />
+            <ConfigProvider>
+              <MyForm />
+            </ConfigProvider>
+          </ConfigProvider>
+        </ConfigProvider>,
+      );
+
+      const submitButtons = getAllByRole('button');
+      expect(submitButtons).toHaveLength(3);
+      submitButtons.forEach(fireEvent.click);
+
+      await waitFakeTimer();
+
+      expect(container.querySelectorAll('.ant-form-item-explain-error')).toHaveLength(3);
+      expect(getAllByText('Please enter Name')).toHaveLength(1);
+      expect(getAllByText('Required')).toHaveLength(2);
+    });
   });
 
   describe('form requiredMark', () => {

components/config-provider/context.ts

@@ -1,4 +1,5 @@
 import type { DerivativeFunc } from '@ant-design/cssinjs';
+import type { ValidateMessages } from 'rc-field-form/lib/interface';
 import * as React from 'react';
 import type { Options } from 'scroll-into-view-if-needed';
 import type { ButtonProps } from '../button';
@@ -81,6 +82,7 @@ export interface ConfigConsumerProps {
     requiredMark?: RequiredMark;
     colon?: boolean;
     scrollToFirstError?: Options | boolean;
+    validateMessages?: ValidateMessages;
   };
   theme?: ThemeConfig;
   select?: {

components/config-provider/index.tsx

@@ -319,6 +319,7 @@ const ProviderChildren: React.FC<ProviderChildrenProps> = (props) => {
       merge(
         defaultLocale.Form?.defaultValidateMessages || {},
         memoedConfig.locale?.Form?.defaultValidateMessages || {},
+        memoedConfig.form?.validateMessages || {},
         form?.validateMessages || {},
       ),
     [memoedConfig, form?.validateMessages],