Implement the behavior that Explorer uses: if the column is too narrow
to fit the current text of a cell into it, don't create a too-small text
control for it, because it is annoying and confusing (typically, the
beginning of the text would be hidden, which is disastrous if it happens
to contain numbers). Instead, grow the text control to be larger than
the column for more comfortable editing.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75183 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
e6b21147db