patch 9.1.1250: cannot set the maximum popup menu width

Problem:  cannot set the maximum popup menu width
          (Lucas Mior)
Solution: add the new global option value 'pummaxwidth'
          (glepnir)

fixes: #10901
closes: #16943

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/optwin.vim b/runtime/optwin.vim
index 9d8ac76..9b59211 100644
--- a/runtime/optwin.vim
+++ b/runtime/optwin.vim
@@ -1,7 +1,7 @@
 " These commands create the option window.
 "
 " Maintainer:	The Vim Project <https://github.com/vim/vim>
-" Last Change:	2025 Mar 07
+" Last Change:	2025 Mar 27
 " Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 " If there already is an option window, jump to that one.
@@ -863,6 +863,8 @@
   call <SID>OptionG("ph", &ph)
   call <SID>AddOption("pumwidth", gettext("minimum width of the popup menu"))
   call <SID>OptionG("pw", &pw)
+  call <SID>AddOption("pumaxmwidth", gettext("maximum width of the popup menu"))
+  call <SID>OptionG("pmw", &pmw)
   call <SID>AddOption("completefunc", gettext("user defined function for Insert mode completion"))
   call append("$", "\t" .. s:local_to_buffer)
   call <SID>OptionL("cfu")