fix(mobile): make cancellation in image providers consistent (#31823)

fix(mobile): handle cancellation in image providers

mobile/lib/presentation/widgets/images/image_provider.dart

@@ -98,6 +98,9 @@ mixin CancellableImageProviderMixin<T extends Object> on CancellableImageProvide
       isFinished = isFinal;
       return codec;
     } catch (e) {
+      if (isCancelled) {
+        return null;
+      }
       if (isFinal) {
         isFinished = true;
         PaintingBinding.instance.imageCache.evict(this);
@@ -111,16 +114,20 @@ mixin CancellableImageProviderMixin<T extends Object> on CancellableImageProvide
 
   Stream<ImageInfo> initialImageStream() async* {
     final cachedOperation = this.cachedOperation;
-    if (cachedOperation == null) {
+    if (isCancelled || cachedOperation == null) {
       return;
     }
 
     try {
       final cachedImage = await cachedOperation.valueOrCancellation();
-      if (cachedImage != null && !isCancelled) {
-        yield cachedImage;
+      if (isCancelled || cachedImage == null) {
+        return;
       }
+      yield cachedImage;
     } catch (e, stack) {
+      if (isCancelled) {
+        return;
+      }
       _log.severe('Error loading initial image', e, stack);
     } finally {
       this.cachedOperation = null;