Improve Missing Models browser resize behavior

tests/test_downloads_tab_workflow_route.mjs

@@ -397,7 +397,7 @@ test('missing browser splitter keeps a compositor preview between live layout fr
   }
 
   assert.match(missingBrowserMethodsSource, /dragThreshold:\s*4/);
-  assert.match(missingBrowserMethodsSource, /layoutFrameStride:\s*2/);
+  assert.match(missingBrowserMethodsSource, /layoutFrameStride:\s*3/);
   assert.match(missingBrowserMethodsSource, /translate3d\(/);
   assert.match(
     resolverMainCssSource,

web/css/resolver-main.css

@@ -751,6 +751,12 @@
     pointer-events: auto;
 }
 
+.mr-missing-browser.is-resizing *,
+.mr-missing-browser.is-resizing .mr-missing-list-row,
+.mr-missing-browser.is-resizing .mr-card {
+    transition: none !important;
+}
+
 #model-resolver-modal .mr-missing-list-row {
     content-visibility: auto;
     contain-intrinsic-size: 70px;
@@ -8960,6 +8966,11 @@ a.mr-image-preview-resource-name:hover {
         content-visibility: auto;
         contain-intrinsic-size: auto 220px;
     }
+
+    .mr-missing-browser.is-resizing .mr-search-results-table-wrap,
+    .mr-missing-browser.is-resizing .mr-match-row {
+        content-visibility: hidden !important;
+    }
 }
 
 #model-resolver-modal .mr-missing-detail-pane .mr-match-row.mr-best-match {

web/resolver/views/missing_browser_methods.js

@@ -1344,7 +1344,7 @@ export const missingBrowserMethods = {
             startWidth: detailWidth,
             bounds,
             dragThreshold: 4,
-            layoutFrameStride: 2,
+            layoutFrameStride: 3,
             onPreview: (pendingWidth, appliedWidth) => {
                 this._pendingMissingBrowserSplitWidth = pendingWidth;
                 this.activateMissingBrowserSplitUi();