ZJIT: Avoid using unexported types in zjit.h

`enum ruby_vminsn_type` is declared in `insns.inc` and is not exported.
Using it in `zjit.h` would cause build errors when the file including it
doesn't include `insns.inc`.

Author: st0012

zjit.h

@@ -14,7 +14,7 @@ extern bool rb_zjit_enabled_p;
 extern uint64_t rb_zjit_call_threshold;
 extern uint64_t rb_zjit_profile_threshold;
 void rb_zjit_compile_iseq(const rb_iseq_t *iseq, rb_execution_context_t *ec, bool jit_exception);
-void rb_zjit_profile_insn(enum ruby_vminsn_type insn, rb_execution_context_t *ec);
+void rb_zjit_profile_insn(int insn, rb_execution_context_t *ec);
 void rb_zjit_profile_enable(const rb_iseq_t *iseq);
 void rb_zjit_bop_redefined(int redefined_flag, enum ruby_basic_operators bop);
 void rb_zjit_cme_invalidate(const rb_callable_method_entry_t *cme);
@@ -26,7 +26,7 @@ void rb_zjit_before_ractor_spawn(void);
 #else
 #define rb_zjit_enabled_p false
 static inline void rb_zjit_compile_iseq(const rb_iseq_t *iseq, rb_execution_context_t *ec, bool jit_exception) {}
-static inline void rb_zjit_profile_insn(enum ruby_vminsn_type insn, rb_execution_context_t *ec) {}
+static inline void rb_zjit_profile_insn(int insn, rb_execution_context_t *ec) {}
 static inline void rb_zjit_profile_enable(const rb_iseq_t *iseq) {}
 static inline void rb_zjit_bop_redefined(int redefined_flag, enum ruby_basic_operators bop) {}
 static inline void rb_zjit_cme_invalidate(const rb_callable_method_entry_t *cme) {}