fix: 修复从任务栏拖动图标分屏后鼠标回到任务栏遮罩不消失的问题

在releaseSplit中增加隐藏遮罩的处理

Log: 优化任务栏分屏功能
Influence: 从任务栏拖动图标到桌面，不松手，然后再回到任务栏，观察遮罩是否消失
Task: https://pms.uniontech.com/task-view-181523.html
Change-Id: I9ec2a3ca62cd830cc6b4f7079d2550e9d21a36c1

frame/screenspliter/screenspliter_wayland.cpp

@@ -172,6 +172,12 @@ bool ScreenSpliter_Wayland::suportSplitScreen()
     return (!m_checkedNotSupport);
 }
 
+bool ScreenSpliter_Wayland::releaseSplit()
+{
+    setMaskVisible(QRect(), false);
+    return true;
+}
+
 /**
  * @brief SplitWindowManager::SplitWindowManager
  * @param wayland下的分屏的管理

frame/screenspliter/screenspliter_wayland.h

@@ -59,6 +59,7 @@ public:
     void startSplit(const QRect &rect) override;
     bool split(SplitDirection direction) override;
     bool suportSplitScreen() override;
+    bool releaseSplit() override;
 
 private:
     void setMaskVisible(const QRect &rect, bool visible);

frame/screenspliter/screenspliter_xcb.cpp

@@ -95,7 +95,6 @@ void ScreenSpliter_Xcb::startSplit(const QRect &rect)
 
 bool ScreenSpliter_Xcb::split(ScreenSpliter::SplitDirection direction)
 {
-    showSplitScreenEffect(QRect(), false);
     if (!openWindow())
         return false;
 
@@ -208,6 +207,7 @@ bool ScreenSpliter_Xcb::suportSplitScreen()
 
 bool ScreenSpliter_Xcb::releaseSplit()
 {
+    showSplitScreenEffect(QRect(), false);
     if (!m_isSplitCreateWindow)
         return false;