fix(sql lab): MultiSelector component render twice (#20706)

* fix(sql lab): MultiSelector component render twice

* filter null/undefined tables

superset-frontend/src/SqlLab/actions/sqlLab.test.js

@@ -835,7 +835,7 @@ describe('async actions', () => {
       });
     });
 
-    describe('removeTable', () => {
+    describe('removeTables', () => {
       it('updates the table schema state in the backend', () => {
         expect.assertions(2);
 
@@ -843,15 +843,32 @@ describe('async actions', () => {
         const store = mockStore({});
         const expectedActions = [
           {
-            type: actions.REMOVE_TABLE,
-            table,
+            type: actions.REMOVE_TABLES,
+            tables: [table],
           },
         ];
-        return store.dispatch(actions.removeTable(table)).then(() => {
+        return store.dispatch(actions.removeTables([table])).then(() => {
           expect(store.getActions()).toEqual(expectedActions);
           expect(fetchMock.calls(updateTableSchemaEndpoint)).toHaveLength(1);
         });
       });
+
+      it('deletes multiple tables and updates the table schema state in the backend', () => {
+        expect.assertions(2);
+
+        const tables = [{ id: 1 }, { id: 2 }];
+        const store = mockStore({});
+        const expectedActions = [
+          {
+            type: actions.REMOVE_TABLES,
+            tables,
+          },
+        ];
+        return store.dispatch(actions.removeTables(tables)).then(() => {
+          expect(store.getActions()).toEqual(expectedActions);
+          expect(fetchMock.calls(updateTableSchemaEndpoint)).toHaveLength(2);
+        });
+      });
     });
 
     describe('migrateQueryEditorFromLocalStorage', () => {