Fix: server picker validates unselected option (#11020)

* add aria-label to default homeserver checkbox

* test ServerPickerDialog

* remove debug

* strict fixes

* dont validate unselected server field on ServerPickerDialog

* i18n

src/components/views/dialogs/ServerPickerDialog.tsx

@@ -157,15 +157,19 @@ export default class ServerPickerDialog extends React.PureComponent<IProps, ISta
     private onSubmit = async (ev: SyntheticEvent): Promise<void> => {
         ev.preventDefault();
 
+        if (this.state.defaultChosen) {
+            this.props.onFinished(this.defaultServer);
+        }
+
         const valid = await this.fieldRef.current?.validate({ allowEmpty: false });
 
-        if (!valid && !this.state.defaultChosen) {
+        if (!valid) {
             this.fieldRef.current?.focus();
             this.fieldRef.current?.validate({ allowEmpty: false, focused: true });
             return;
         }
 
-        this.props.onFinished(this.state.defaultChosen ? this.defaultServer : this.validatedConf);
+        this.props.onFinished(this.validatedConf);
     };
 
     public render(): React.ReactNode {

test/components/views/dialogs/ServerPickerDialog-test.tsx

@@ -110,12 +110,6 @@ describe("<ServerPickerDialog />", () => {
 
             fireEvent.click(screen.getByText("Continue"));
 
-            // serverpicker still validates the 'other homeserver' field on submit
-            // when default is chosen
-            // so this throws a lot of errors into the console
-            // and is asynchronous while waiting for validation
-            await flushPromises();
-
             // closed dialog with default server
             expect(onFinished).toHaveBeenCalledWith(defaultServerConfig);
         });