fix(app): contain right panel suspense (#39080)

packages/app/src/pages/session.tsx

@@ -6,6 +6,7 @@ import {
   batch,
   ErrorBoundary,
   onCleanup,
+  Suspense,
   Show,
   Match,
   Switch,
@@ -2297,6 +2298,7 @@ export default function Page() {
         </div>
 
         <Show when={!newSessionDesign() && desktopSidePanelOpen()}>
+          <Suspense>
             <SessionSidePanel
               canReview={canReview}
               diffs={reviewDiffs}
@@ -2311,12 +2313,14 @@ export default function Page() {
               reviewSnap={ui.reviewSnap}
               size={size}
             />
+          </Suspense>
         </Show>
         <Show when={newSessionDesign()}>
           <Show when={isDesktop() ? desktopV2PanelLayout().visible : terminalOpen()}>
             <div class="min-w-0 h-full flex flex-1 flex-col">
               <Show when={isDesktop() && (desktopV2ReviewOpen() || desktopFileTreeOpen())}>
                 <div class="min-h-0 flex-1">
+                  <Suspense>
                     <SessionSidePanel
                       canReview={canReview}
                       diffs={reviewDiffs}
@@ -2340,6 +2344,7 @@ export default function Page() {
                       size={size}
                       stacked={desktopV2PanelLayout().stacked}
                     />
+                  </Suspense>
                 </div>
               </Show>
               <Show when={desktopV2PanelLayout().stacked}>