Adjust IP after an AV during an STEP with FEATURE_EMULATE_SINGLESTEP …

…enabled (dotnet#105633)

Fix step in a line that will throw an AV

src/coreclr/debug/ee/controller.cpp

@@ -3232,7 +3232,7 @@ void DebuggerController::UnapplyTraceFlag(Thread *thread)
         // so there should be nothing to do. However, we still assert b/c we want to know how
         // we'd actually hit this.
         // @todo - is there a path if TriggerUnwind() calls DisableAll(). But why would
-        CONSISTENCY_CHECK_MSGF(false, ("How did we get here?. thread=%p\n", thread));
+        //CONSISTENCY_CHECK_MSGF(false, ("How did we get here?. thread=%p\n", thread)); it can be caused in a scenario where we are stepping and an AV is thrown
         LOG((LF_CORDB,LL_INFO1000, "DC::UnapplyTraceFlag couldn't get context.\n"));
         return;
     }

src/coreclr/vm/exceptionhandling.cpp

@@ -5426,6 +5426,17 @@ BOOL IsSafeToCallExecutionManager()
 
 BOOL IsSafeToHandleHardwareException(PCONTEXT contextRecord, PEXCEPTION_RECORD exceptionRecord)
 {
+#ifdef FEATURE_EMULATE_SINGLESTEP    
+    Thread *pThread = GetThreadNULLOk();
+    if (pThread && pThread->IsSingleStepEnabled() &&
+        exceptionRecord->ExceptionCode != STATUS_BREAKPOINT &&
+        exceptionRecord->ExceptionCode != STATUS_SINGLE_STEP &&
+        exceptionRecord->ExceptionCode != STATUS_STACK_OVERFLOW)
+    {
+        pThread->HandleSingleStep(contextRecord, exceptionRecord->ExceptionCode);
+    }
+#endif
+
     PCODE controlPc = GetIP(contextRecord);
 
     if (IsIPInWriteBarrierCodeCopy(controlPc))