General: Convert PanicAlerts over to fmt equivalent

Converts lingering panic alert calls over to the fmt-capable ones.

Source/Core/VideoBackends/D3DCommon/SwapChain.cpp

@@ -126,7 +126,7 @@ bool SwapChain::CreateSwapChain(bool stereo)
 
   if (FAILED(hr))
   {
-    PanicAlert("Failed to create swap chain with HRESULT %08X", hr);
+    PanicAlertFmt("Failed to create swap chain with HRESULT {:08X}", hr);
     return false;
   }
 
@@ -139,7 +139,7 @@ bool SwapChain::CreateSwapChain(bool stereo)
   m_stereo = stereo;
   if (!CreateSwapChainBuffers())
   {
-    PanicAlert("Failed to create swap chain buffers");
+    PanicAlertFmt("Failed to create swap chain buffers");
     DestroySwapChainBuffers();
     m_swap_chain.Reset();
     return false;
@@ -187,7 +187,7 @@ void SwapChain::SetStereo(bool stereo)
   DestroySwapChain();
   if (!CreateSwapChain(stereo))
   {
-    PanicAlert("Failed to switch swap chain stereo mode");
+    PanicAlertFmt("Failed to switch swap chain stereo mode");
     CreateSwapChain(false);
   }
 }