如何将 tcolorbox 的框标题移动到框的前面？

Question

如何将tcolorbox的框式标题移到前景上（移到框的前面）？如您在屏幕截图（红色矩形，我的高亮部分）中看到的，网格与标题重叠，这种行为是不受欢迎的。

\documentclass[]{article}
\usepackage[most]{tcolorbox}
\NewTColorBox{solution}{+O{}}{%
  breakable, 
    enhanced,
    sharpish corners, 
    colframe=blue!50,
    colback=white,
    coltitle=blue!50,
    parbox = false,
    fonttitle=\bfseries,
    title={Solution},
    attach boxed title to top center ={yshift=-\tcboxedtitleheight/2,yshifttext=-\tcboxedtitleheight/2},
    halign title=flush center,
    boxed title style={%
    colback=white,
    },
  boxrule=0.5mm,top=0mm,bottom=0mm,
  underlay={%
      \draw[help lines,step=5mm,blue!20!white,shift={(interior.north west)}]
      (interior.south west) grid (interior.north east);
  },
  lowerbox=ignored,
  #1
  }

\begin{document}

\begin{solution}
Some text
\end{solution}

\end{document}

Answer 1

underlay boxed title在添加方框标题之前绘制underlay网格，导致方框标题出现在前景中（另请参阅手册第 200 页tcolorbox）：

\documentclass[]{article}
\usepackage[most]{tcolorbox}
\NewTColorBox{solution}{+O{}}{%
  breakable, 
    enhanced,
    sharpish corners, 
    colframe=blue!50,
    colback=white,
    coltitle=blue!50,
    parbox = false,
    fonttitle=\bfseries,
    title={Solution},
    attach boxed title to top center ={yshift=-\tcboxedtitleheight/2,yshifttext=-\tcboxedtitleheight/2},
    halign title=flush center,
    boxed title style={%
    colback=white,
    },
  boxrule=0.5mm,top=0mm,bottom=0mm,
  underlay boxed title={%
      \draw[help lines,step=5mm,blue!20!white,shift={(interior.north west)}]
      (interior.south west) grid (interior.north east);
  },
  lowerbox=ignored,
  #1
  }

\begin{document}

\begin{solution}
Some text
\end{solution}

\end{document}