[Kernel] Fixed incorrect amount of propagated notifications on boot

- Created dedicated method: IsUIActive

src/xenia/kernel/xam/xam_input.cc

@@ -107,7 +107,7 @@ dword_result_t XamInputGetState_entry(dword_t user_index, dword_t flags,
     return X_ERROR_DEVICE_NOT_CONNECTED;
   }
 
-  if (kernel_state()->xam_state()->xam_dialogs_shown_ > 0) {
+  if (kernel_state()->xam_state()->IsUIActive()) {
     return X_ERROR_SUCCESS;
   }
 
@@ -181,7 +181,7 @@ dword_result_t XamInputGetKeystrokeEx_entry(
 
   keystroke.Zero();
 
-  if (kernel_state()->xam_state()->xam_dialogs_shown_ > 0) {
+  if (kernel_state()->xam_state()->IsUIActive()) {
     return X_ERROR_SUCCESS;
   }
 

src/xenia/kernel/xam/xam_state.h

@@ -54,11 +54,14 @@ class XamState {
   bool IsUserSignedIn(uint32_t user_index) const;
   bool IsUserSignedIn(uint64_t xuid) const;
 
-  //
   void LoadSpaInfo(const SpaInfo* info);
 
   void SetContentRegisterCallback(uint32_t callback);
 
+  bool IsUIActive() const {
+    return xam_dialogs_shown_ > 0 || xam_nui_dialogs_shown_ > 0;
+  }
+
   X_DASH_APP_INFO dash_app_info_ = {};
   uint32_t dash_backstack_nodes_count_ = 0;
   X_DASH_BACKSTACK_DATA dash_backstack_data_[2] = {};

src/xenia/kernel/xam/xam_ui.cc

@@ -390,7 +390,7 @@ static dword_result_t XamShowMessageBoxUi(
 }
 
 dword_result_t XamIsUIActive_entry() {
-  return kernel_state()->xam_state()->xam_dialogs_shown_ > 0;
+  return kernel_state()->xam_state()->IsUIActive();
 }
 DECLARE_XAM_EXPORT2(XamIsUIActive, kUI, kImplemented, kHighFrequency);