LibWeb: Make Blob and File GC-allocated

Author: https://github.com/awesomekling
Commit: 647ac1bdba
Pull-request: https://github.com/SerenityOS/serenity/pull/14816
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.h

@@ -18,7 +18,7 @@ namespace Web::Fetch::Infrastructure {
 // https://fetch.spec.whatwg.org/#concept-body
 class Body final {
 public:
-    using SourceType = Variant<Empty, ByteBuffer, NonnullRefPtr<FileAPI::Blob>>;
+    using SourceType = Variant<Empty, ByteBuffer, JS::Handle<FileAPI::Blob>>;
 
     struct ReadableStreamDummy { };