System: Make some boot error messages translatable

src/core/host_interface.cpp

@@ -101,7 +101,7 @@ bool HostInterface::BootSystem(const SystemBootParameters& parameters)
 
   if (!AcquireHostDisplay())
   {
-    ReportFormattedError("Failed to acquire host display");
+    ReportFormattedError(g_host_interface->TranslateString("System", "Failed to acquire host display."));
     OnSystemDestroyed();
     return false;
   }
@@ -115,7 +115,8 @@ bool HostInterface::BootSystem(const SystemBootParameters& parameters)
 
   if (!System::Boot(parameters))
   {
-    ReportFormattedError("System failed to boot. The log may contain more information.");
+    ReportFormattedError(
+      g_host_interface->TranslateString("System", "System failed to boot. The log may contain more information."));
     OnSystemDestroyed();
     m_audio_stream.reset();
     ReleaseHostDisplay();

src/core/system.cpp

@@ -716,7 +716,8 @@ bool Boot(const SystemBootParameters& params)
   std::optional<BIOS::Image> bios_image = g_host_interface->GetBIOSImage(s_region);
   if (!bios_image)
   {
-    g_host_interface->ReportFormattedError("Failed to load %s BIOS", Settings::GetConsoleRegionName(s_region));
+    g_host_interface->ReportFormattedError(g_host_interface->TranslateString("System", "Failed to load %s BIOS."),
+                                           Settings::GetConsoleRegionName(s_region));
     Shutdown();
     return false;
   }