gh-15494: Fixed library media tab freezing (gh-15495)

src/zen/common/zenThemeModifier.js

@@ -110,7 +110,7 @@
           const targetRadius = window.matchMedia("(-moz-mac-tahoe-theme)")
             .matches
             ? 11
-            : 10;
+            : 9;
           document.documentElement.style.setProperty(
             "--zen-border-radius",
             targetRadius + "px"

src/zen/library/ZenLibraryFileTypes.sys.mjs

@@ -70,7 +70,11 @@ export function contentTypeOf(fileName) {
   if (!extension) {
     return "";
   }
-  return lazy.mimeService.getTypeFromExtension(extension);
+  try {
+    return lazy.mimeService.getTypeFromExtension(extension);
+  } catch {
+    return "";
+  }
 }
 
 /**

src/zen/spaces/ZenSpaceManager.mjs

@@ -3314,7 +3314,7 @@ class nsZenWorkspaces {
       parent.removeAttribute("icons-overflow");
       return;
     }
-    const maxButtonSize = 32; // IMPORTANT: This should match the CSS size of the icons
+    const maxButtonSize = AppConstants.platform == "macosx" ? 34 : 32; // IMPORTANT: This should match the CSS size of the icons
     const minButtonSize = maxButtonSize / 2; // Minimum size for icons when space is limited
     const separation = 3; // Space between icons