fix(sqllab): pass DB id instead of name (#33955)

superset-frontend/src/components/DatabaseSelector/DatabaseSelector.test.tsx

@@ -353,7 +353,7 @@ test('Sends the correct db when changing the database', async () => {
   await waitFor(() =>
     expect(props.onDbChange).toHaveBeenCalledWith(
       expect.objectContaining({
-        id: `mysql-test-mysql-2`,
+        value: 2,
         database_name: 'test-mysql',
         backend: 'mysql',
       }),

superset-frontend/src/components/DatabaseSelector/index.tsx

@@ -196,7 +196,6 @@ export function DatabaseSelector({
               />
             ),
             value: row.id,
-            id: `${row.backend}-${row.database_name}-${row.id}`,
             database_name: row.database_name,
             backend: row.backend,
             allow_multi_catalog: row.allow_multi_catalog,