Call UpdatePatternLocations from a background thread (microsoft#13758)

We have a number of theories why microsoft#12607 is happening, one of which is that
some GPU drivers somehow rely on Win32 messages or similar which we process
on the main thread. If we then try to acquire the console lock on the main
thread, while the GPU-driver thread itself is holding that lock, we've got
ourselves a deadlock. This PR makes this less likely by running the repeat
offender `UpdatePatternLocations` on a background thread instead.
We have a number of other locations which acquire the console lock on the
main thread and a thorough bug fix must be done in a different way.

* After pasting an URL it gets underlined on hover ✅

(cherry picked from commit 23e4d31)
Service-Card-Id: 85033018
Service-Version: 1.14

src/cascadia/TerminalControl/ControlCore.cpp

@@ -172,11 +172,12 @@ namespace winrt::Microsoft::Terminal::Control::implementation
                 }
             });
 
-        _updatePatternLocations = std::make_shared<ThrottledFuncTrailing<>>(
-            _dispatcher,
+        // NOTE: Calling UpdatePatternLocations from a background
+        // thread is a workaround for us to hit GH#12607 less often.
+        _updatePatternLocations = std::make_unique<til::throttled_func_trailing<>>(
             UpdatePatternLocationsInterval,
             [weakThis = get_weak()]() {
-                if (auto core{ weakThis.get() }; !core->_IsClosing())
+                if (auto core{ weakThis.get() })
                 {
                     core->UpdatePatternLocations();
                 }
@@ -445,7 +446,7 @@ namespace winrt::Microsoft::Terminal::Control::implementation
         //      itself - it was initiated by the mouse wheel, or the scrollbar.
         _terminal->UserScrollViewport(viewTop);
 
-        _updatePatternLocations->Run();
+        (*_updatePatternLocations)();
     }
 
     void ControlCore::AdjustOpacity(const double adjustment)
@@ -1199,7 +1200,7 @@ namespace winrt::Microsoft::Terminal::Control::implementation
         }
 
         // Additionally, start the throttled update of where our links are.
-        _updatePatternLocations->Run();
+        (*_updatePatternLocations)();
     }
 
     void ControlCore::_terminalCursorPositionChanged()
@@ -1511,7 +1512,7 @@ namespace winrt::Microsoft::Terminal::Control::implementation
         _terminal->Write(hstr);
 
         // Start the throttled update of where our hyperlinks are.
-        _updatePatternLocations->Run();
+        (*_updatePatternLocations)();
     }
 
     // Method Description:

src/cascadia/TerminalControl/ControlCore.h

@@ -251,7 +251,7 @@ namespace winrt::Microsoft::Terminal::Control::implementation
 
         winrt::Windows::System::DispatcherQueue _dispatcher{ nullptr };
         std::shared_ptr<ThrottledFuncTrailing<>> _tsfTryRedrawCanvas;
-        std::shared_ptr<ThrottledFuncTrailing<>> _updatePatternLocations;
+        std::unique_ptr<til::throttled_func_trailing<>> _updatePatternLocations;
         std::shared_ptr<ThrottledFuncTrailing<Control::ScrollPositionChangedArgs>> _updateScrollBar;
 
         winrt::fire_and_forget _asyncCloseConnection();