JIT: don't ask for all write barrer helpers for AOT (#97677)

Fixes an issue introduced by #97535. AOT hosts don't support all the
possible write barriers and blow things up if the JIT asks for ones
they don't support.

Also add back the initial semicolon to the metrics line

src/coreclr/jit/codegencommon.cpp

@@ -1701,7 +1701,9 @@ void CodeGen::genGenerateCode(void** codePtr, uint32_t* nativeSizeOfCode)
     DoPhase(this, PHASE_EMIT_GCEH, &CodeGen::genEmitUnwindDebugGCandEH);
 
 #ifdef DEBUG
-    if (genWriteBarrierUsed && JitConfig.EnableExtraSuperPmiQueries())
+    // For R2R/NAOT not all these helpers are implemented. So don't ask for them.
+    //
+    if (genWriteBarrierUsed && JitConfig.EnableExtraSuperPmiQueries() && !compiler->opts.IsReadyToRun())
     {
         void* ignored;
         for (int i = CORINFO_HELP_ASSIGN_REF; i <= CORINFO_HELP_ASSIGN_STRUCT; i++)
@@ -2036,7 +2038,7 @@ void CodeGen::genEmitMachineCode()
             printf("\n");
         }
 
-        printf("Total bytes of code %d, prolog size %d, PerfScore %.2f, instruction count %d, allocated bytes for "
+        printf("; Total bytes of code %d, prolog size %d, PerfScore %.2f, instruction count %d, allocated bytes for "
                "code %d",
                codeSize, prologSize, compiler->info.compPerfScore, instrCount,
                GetEmitter()->emitTotalHotCodeSize + GetEmitter()->emitTotalColdCodeSize);