GH-125911: Call combine_symbol_mask on the initial trampoline of a trace (GH-125973)

Author: Zheaoli

Python/jit.c

@@ -473,6 +473,7 @@ _PyJIT_Compile(_PyExecutorObject *executor, const _PyUOpInstruction trace[], siz
     group = &trampoline;
     code_size += group->code_size;
     data_size += group->data_size;
+    combine_symbol_mask(group->trampoline_mask, state.trampolines.mask);
     for (size_t i = 0; i < length; i++) {
         const _PyUOpInstruction *instruction = &trace[i];
         group = &stencil_groups[instruction->opcode];