fix(modals): preserve model type during navigation (#771)

Move cleanupNavigationShortcuts() call before setting navigationModelType
to ensure the correct model type is preserved when using left/right arrow
keys to navigate between models. Previously, the cleanup would immediately
nullify navigationModelType, causing type-specific modal sections (like
trigger words for embeddings and usage tips for loras) to disappear.

static/js/components/shared/ModelModal.js

@@ -940,8 +940,8 @@ function setupNavigationShortcuts(modelType) {
     const modalElement = document.getElementById('modelModal');
     if (!modalElement) return;
 
-    navigationModelType = modelType;
     cleanupNavigationShortcuts();
+    navigationModelType = modelType;
 
     navigationKeyHandler = (event) => {
         if (shouldIgnoreNavigationKey(event)) return;