LibJS: Save scheduled jumps when entering unwind contexts

These are then restored upon `ContinuePendingUnwind`.
This stops us from forgetting where we needed to jump when we do extra
try-catches in finally blocks.

Co-Authored-By: Jesús "gsus" Lapastora <cyber.gsuscode@gmail.com>

Userland/Libraries/LibJS/Bytecode/Interpreter.h

@@ -32,6 +32,7 @@ struct CallFrame {
     Vector<Value> registers;
     Vector<GCPtr<Environment>> saved_lexical_environments;
     Vector<UnwindInfo> unwind_contexts;
+    Vector<BasicBlock const*> previously_scheduled_jumps;
 };
 
 class Interpreter {