Fix: Check FrameType before accessing ComponentId in tests (#64147)

Two tests accessed ComponentId without validating FrameType == Component, violating the API contract (RenderTreeFrame.cs:161-165). This causes regressions on big-endian architectures (s390x).

Author: medhatiwari

src/Components/Components/test/RendererTest.cs

@@ -2243,7 +2243,7 @@ public void RenderBatchIncludesListOfDisposedComponents()
             .Where(frame => frame.FrameType == RenderTreeFrameType.Component)
             .Select(frame => frame.ComponentId)
             .ToList();
-        var childComponent3 = batch.ReferenceFrames.Where(f => f.ComponentId == 3)
+        var childComponent3 = batch.ReferenceFrames.Where(f => f.FrameType == RenderTreeFrameType.Component && f.ComponentId == 3)
             .Single().Component;
         Assert.Equal(new[] { 1, 2 }, childComponentIds);
         Assert.IsType<FakeComponent>(childComponent3);
@@ -3050,7 +3050,7 @@ public void QueuedRenderIsSkippedIfComponentWasAlreadyDisposedInSameBatch()
         component.TriggerRender();
         var childComponentId = renderer.Batches.Single()
             .ReferenceFrames
-            .Where(f => f.ComponentId != 0)
+            .Where(f => f.FrameType == RenderTreeFrameType.Component && f.ComponentId != 0)
             .Single()
             .ComponentId;
         var origEventHandlerId = renderer.Batches.Single()