Fix flakey UI test (#1780)

---------

Signed-off-by: fayi-da <fayimora.femibalogun@digitalasset.com>

Author: fayi-da

apps/sv/frontend/src/__tests__/governance/forms/update-sv-reward-weight-form-test.test.tsx

@@ -136,7 +136,9 @@ describe('Update SV Reward Weight Form', () => {
     await user.clear(expiryDateInput);
     await user.type(expiryDateInput, thePast);
 
-    expect(screen.getByText('Expiration must be in the future')).toBeDefined();
+    waitFor(() => {
+      expect(screen.queryByText('Expiration must be in the future')).toBeDefined();
+    });
 
     await user.clear(expiryDateInput);
     await user.type(expiryDateInput, theFuture);
@@ -166,7 +168,7 @@ describe('Update SV Reward Weight Form', () => {
     await user.type(effectiveDateInput, effectiveDate.format(dateTimeFormatISO));
 
     waitFor(() => {
-      expect(screen.getByText('Effective Date must be after expiration date')).toBeDefined();
+      expect(screen.queryByText('Effective Date must be after expiration date')).toBeDefined();
     });
 
     const validEffectiveDate = expiryDate.add(1, 'day').format(dateTimeFormatISO);
@@ -209,7 +211,9 @@ describe('Update SV Reward Weight Form', () => {
     expect(weightInput).toBeDefined();
     await user.type(weightInput, '123abc');
 
-    expect(screen.getByText('Weight must be a valid number')).toBeDefined();
+    waitFor(() => {
+      expect(screen.getByText('Weight must be a valid number')).toBeDefined();
+    });
 
     await user.clear(weightInput);
     await user.type(weightInput, '1001');