Skip isolating cover instructions when native coverage is available

If OTP is compiled with native coverage support (OTP 27+ plus JIT),
`cover` does not attempt to inject counters into the code, so
isolating the cover instructions fails. We can skip that step when we
detect native coverage support.

src/horus.erl

@@ -1218,8 +1218,16 @@ pass1_process_instructions(
   Instructions,
   #state{mfa_in_progress = MFA,
          asm_in_progress_from = cover} = State) ->
-    Instructions1 = horus_cover:isolate_cover_instructions(MFA, Instructions),
-    pass1_process_instructions(Instructions1, State, []);
+    NativeCoverageSupport = erlang:function_exported(
+                              code, coverage_support, 0) andalso
+                                apply(code, coverage_support, []),
+    case NativeCoverageSupport of
+        true ->
+            pass1_process_instructions(Instructions, State, []);
+        false ->
+            Instructions1 = horus_cover:isolate_cover_instructions(MFA, Instructions),
+            pass1_process_instructions(Instructions1, State, [])
+    end;
 pass1_process_instructions(Instructions, State) ->
     pass1_process_instructions(Instructions, State, []).