fix: adjust animation start and end values for load slider in DLineEditEx

Updated the animation parameters to improve the visual effect of the load slider by changing the start and end values. This enhances the user experience during loading animations.

Log: as title
Pms: BUG-311099

Author: yixinshark

src/widgets/dlineeditex.cpp

@@ -99,8 +99,10 @@ void DLineEditEx::startAnimation()
     }
     m_loadSlider->show();
     m_loadSlider->resize(40, height());
-    m_animation->setStartValue(QPoint(0 - 40, 0));
-    m_animation->setEndValue(QPoint(width(), 0));
+    // 动画块距离右侧的距离10px结束
+    int endX = (width() - m_loadSlider->width() - 10) > 0 ?  width() - m_loadSlider->width() - 10 : width();
+    m_animation->setStartValue(QPoint(0 , 0));
+    m_animation->setEndValue(QPoint(endX, 0));
     m_animation->start();
 }