[d3d11] Use sfence before finishing or submitting command list

src/d3d11/d3d11_context_def.cpp

@@ -163,6 +163,9 @@ namespace dxvk {
           ID3D11CommandList   **ppCommandList) {
     D3D10DeviceLock lock = LockContext();
 
+    // Make writes to mapped buffers available
+    bit::sfence();
+
     // End all queries that were left active by the app
     FinalizeQueries();
 

src/d3d11/d3d11_context_imm.cpp

@@ -1105,6 +1105,9 @@ namespace dxvk {
     if (!GetPendingCsChunks() && !hEvent)
       return;
 
+    // Make writes to mapped buffers available
+    bit::sfence();
+
     // Unbind unused resources
     ApplyDirtyNullBindings();