[DevTools] Don't attempt to draw bounding box if inspected element is not a Suspense (#35097)

Author: eps1lon

packages/react-devtools-shared/src/devtools/store.js

@@ -669,6 +669,10 @@ export default class Store extends EventEmitter<{
     return element;
   }
 
+  containsSuspense(id: SuspenseNode['id']): boolean {
+    return this._idToSuspense.has(id);
+  }
+
   getSuspenseByID(id: SuspenseNode['id']): SuspenseNode | null {
     const suspense = this._idToSuspense.get(id);
     if (suspense === undefined) {

packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseRects.js

@@ -511,7 +511,11 @@ function SuspenseRectsContainer({
   let selectedEnvironment = null;
   if (isRootSelected) {
     selectedEnvironment = rootEnvironment;
-  } else if (inspectedElementID !== null) {
+  } else if (
+    inspectedElementID !== null &&
+    // TODO: Separate inspected element and inspected Suspense and use the inspected Suspense ID here.
+    store.containsSuspense(inspectedElementID)
+  ) {
     const selectedSuspenseNode = store.getSuspenseByID(inspectedElementID);
     if (
       selectedSuspenseNode !== null &&