vim-patch:9.1.0831: 'findexpr' can't be used as lambad or Funcref (#31058)

Problem:  'findexpr' can't be used for lambads
          (Justin Keyes)
Solution: Replace the findexpr option with the findfunc option
          (Yegappan Lakshmanan)

related: vim/vim#15905
closes: vim/vim#15976

a13f3a4f5d

Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>

runtime/lua/vim/_meta/vvars.lua

@@ -44,11 +44,6 @@ vim.v.cmdarg = ...
 --- @type integer
 vim.v.cmdbang = ...
 
---- When evaluating 'findexpr': if 'findexpr' is used for cmdline
---- completion the value is `v:true`, otherwise it is `v:false`.
---- @type boolean
-vim.v.cmdcomplete = ...
-
 --- The current locale setting for collation order of the runtime
 --- environment.  This allows Vim scripts to be aware of the
 --- current locale encoding.  Technical: it's the value of
@@ -272,8 +267,7 @@ vim.v.fcs_choice = ...
 vim.v.fcs_reason = ...
 
 --- When evaluating 'includeexpr': the file name that was
---- detected.  When evaluating 'findexpr': the argument passed to
---- the `:find` command.  Empty otherwise.
+--- detected.  Empty otherwise.
 --- @type string
 vim.v.fname = ...