LibJS/JIT: Add patchable absolute references to basic blocks

Author: https://github.com/awesomekling
Commit: 3523f9f722
Pull-request: https://github.com/SerenityOS/serenity/pull/21619
Reviewed-by: https://github.com/Hendiadyoin1

Userland/Libraries/LibJS/Bytecode/BasicBlock.h

@@ -51,6 +51,9 @@ public:
 
     // Offsets into the instruction stream where we have RIP-relative jump offsets to here that need patching.
     Vector<size_t> jumps_to_here;
+
+    // Offsets into the instruction stream where we have absolute 64-bit references to here that need patching.
+    Vector<size_t> absolute_references_to_here;
     // ==============================================================
 
 private: