opt dialog button style

Signed-off-by: 21pages <pages21@163.com>

flutter/lib/desktop/pages/desktop_home_page.dart

@@ -627,8 +627,8 @@ void setPasswordDialog() async {
         ),
       ),
       actions: [
-        TextButton(onPressed: close, child: Text(translate("Cancel"))),
-        TextButton(onPressed: submit, child: Text(translate("OK"))),
+        dialogButton("Cancel", onPressed: close, isOutline: true),
+        dialogButton("OK", onPressed: submit),
       ],
       onSubmit: submit,
       onCancel: close,

flutter/lib/desktop/pages/desktop_setting_page.dart

@@ -1671,8 +1671,8 @@ void changeSocks5Proxy() async {
         ),
       ),
       actions: [
-        TextButton(onPressed: close, child: Text(translate('Cancel'))),
-        TextButton(onPressed: submit, child: Text(translate('OK'))),
+        dialogButton('Cancel', onPressed: close, isOutline: true),
+        dialogButton('OK', onPressed: submit),
       ],
       onSubmit: submit,
       onCancel: close,

flutter/lib/desktop/pages/file_manager_page.dart

@@ -802,14 +802,9 @@ class _FileManagerPageState extends State<FileManagerPage>
                               ],
                             ),
                             actions: [
-                              TextButton(
-                                  style: flatButtonStyle,
-                                  onPressed: cancel,
-                                  child: Text(translate("Cancel"))),
-                              ElevatedButton(
-                                  style: flatButtonStyle,
-                                  onPressed: submit,
-                                  child: Text(translate("OK")))
+                              dialogButton("Cancel",
+                                  onPressed: cancel, isOutline: true),
+                              dialogButton("OK", onPressed: submit)
                             ],
                             onSubmit: submit,
                             onCancel: cancel,