[Screen Ruler] Close on left click and attribution adjustment (#20163)

* [Screen Ruler] end measure mode sessions on left click

* [Screen Ruler] move attribution to a separate section

* spelling

src/modules/MeasureTool/MeasureToolCore/MeasureToolOverlayUI.cpp

@@ -103,6 +103,7 @@ LRESULT CALLBACK MeasureToolWndProc(HWND window, UINT message, WPARAM wparam, LP
                                                             SetClipBoardToText(text.buffer);
                                                         }); });
         }
+        PostMessageW(window, WM_CLOSE, {}, {});
         break;
     case WM_MOUSEWHEEL:
         if (auto state = GetWindowParam<Serialized<MeasureToolState>*>(window))