fix(desktop): Windows 위젯 추가 팝업 즉시 표시

창 크기 조절 완료를 기다리지 않고 picker를 먼저 열고, body portal·
resize 타임아웃으로 WebView2에서 팝업이 뜨지 않던 문제를 해결합니다.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/styles/widgetDashboard.css

@@ -1329,6 +1329,16 @@ html.fw-native-widget .wd-picker-native-loading {
   font-size: 13px;
 }
 
+html.fw-native-widget.fw-native-picker-open .fw-widget-native-root .fw-window {
+  visibility: hidden;
+  pointer-events: none;
+}
+
+html.fw-native-widget.fw-native-picker-open .wd-picker-native-overlay {
+  padding: 0;
+  background: var(--bg, #1a1b26);
+}
+
 .bps-page--wd-no-left .bps-side-wrap--left,
 .bps-page--wd-no-left .bps-side-wrap--left + .bps-splitter {
   display: none !important;