fix: Fix the issue with the thickness of the dividing line.

Fix the issue with the thickness of the dividing line in the Rename Window

Log: Shorten the thickness of the dividing line in the Rename Window
Bug: https://pms.uniontech.com/bug-view-156719.html

libimageviewer/widgets/renamedialog.cpp

@@ -37,7 +37,7 @@ RenameDialog::RenameDialog(const QString &filename, QWidget *parent)
     m_edtlayout = new QHBoxLayout();
     m_lineedt = new DLineEdit(widet);
     QFrame *line = new QFrame(widet);
-    line->setLineWidth(2);
+    line->setLineWidth(1);
     line->setFixedHeight(25);  // 垂直分割线短于按钮高度
     QLbtoDLabel *labtitle = new QLbtoDLabel();
     okbtn = new DSuggestButton(tr("Confirm"), widet);