Auto merge of #24123 - gterzian:redo_blob, r=jdm

Restructure Blob, structured serialization

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FIX #24052 and also address the "cloning" half of FIX #23917

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- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)

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- [ ] These changes do not require tests because ___

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components/script/script_thread.rs

@@ -1592,7 +1592,7 @@ impl ScriptThread {
 
             window
                 .upcast::<GlobalScope>()
-                .perform_a_message_port_garbage_collection_checkpoint();
+                .perform_a_dom_garbage_collection_checkpoint();
 
             let pending_reflows = window.get_pending_reflow_count();
             if pending_reflows > 0 {