更新超广角相机的变焦比例，确保在相机能力允许的情况下使用0.6x的缩放比例，优化相关UI和测试用例。

lib/features/recording/widgets/widget_recording_hud.dart

@@ -234,7 +234,7 @@ class _ZoomPresetControl extends StatelessWidget {
             for (final preset in availablePresets)
               _ZoomPresetButton(
                 displayRatio: preset,
-                requestRatio: _requestRatioFor(preset),
+                requestRatio: preset,
                 selected: _isPresetSelected(preset),
                 enabled: !_wouldSwitchPhysicalCamera(preset),
                 onSelected: onSelected,
@@ -259,13 +259,6 @@ class _ZoomPresetControl extends StatelessWidget {
     return (zoomRatio - preset).abs() < 0.05;
   }
 
-  double _requestRatioFor(double preset) {
-    if (preset < 1.0) {
-      return minZoomRatio <= 0.5 ? 0.5 : preset;
-    }
-    return preset;
-  }
-
   bool _wouldSwitchPhysicalCamera(double preset) {
     if (!isRecording) {
       return false;