new_editor: unify shared UI text measurement semantics

new_editor/include/XCEditor/Menu/UIEditorMenuPopup.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <XCEditor/Foundation/UIEditorTextMeasurement.h>
 #include <XCEditor/Menu/UIEditorMenuModel.h>
 #include <XCEngine/UI/DrawData.h>
 
@@ -23,8 +24,9 @@ struct UIEditorMenuPopupItem {
     bool enabled = true;
     bool checked = false;
     bool hasSubmenu = false;
-    float desiredLabelWidth = 0.0f;
-    float desiredShortcutWidth = 0.0f;
+    // Pure measured text widths. Row/popup sizing is derived from them locally.
+    float measuredLabelWidth = 0.0f;
+    float measuredShortcutWidth = 0.0f;
 };
 
 struct UIEditorMenuPopupState {
@@ -91,6 +93,16 @@ struct UIEditorMenuPopupHitTarget {
     std::size_t index = UIEditorMenuPopupInvalidIndex;
 };
 
+float ResolveUIEditorMenuPopupMeasuredLabelWidth(
+    const UIEditorMenuPopupItem& item,
+    const UIEditorMenuPopupMetrics& metrics = {},
+    const UIEditorTextMeasurer* textMeasurer = nullptr);
+
+float ResolveUIEditorMenuPopupMeasuredShortcutWidth(
+    const UIEditorMenuPopupItem& item,
+    const UIEditorMenuPopupMetrics& metrics = {},
+    const UIEditorTextMeasurer* textMeasurer = nullptr);
+
 float ResolveUIEditorMenuPopupDesiredWidth(
     const std::vector<UIEditorMenuPopupItem>& items,
     const UIEditorMenuPopupMetrics& metrics = {});