[DevTools] Attempt at a better "unique suspender" text (#34854)

Nobody knows what this terminology means.

Also, this tooltip component sucks:

<img width="634" height="137" alt="Screenshot 2025-10-15 at 12 04 49 AM"
src="https://github.com/user-attachments/assets/a1c33650-7c7d-441f-8f8b-0ea7ebea9351"
/>

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

@@ -85,7 +85,9 @@ function ToggleUniqueSuspenders() {
     <Toggle
       isChecked={uniqueSuspendersOnly}
       onChange={handleToggleUniqueSuspenders}
-      title={'Only include boundaries with unique suspenders'}>
+      title={
+        'Filter Suspense which does not suspend, or if the parent also suspend on the same.'
+      }>
       <ButtonIcon type={uniqueSuspendersOnly ? 'filter-on' : 'filter-off'} />
     </Toggle>
   );