defaults: revert wildmode to 'full'

runtime/doc/options.txt

@@ -6967,7 +6967,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 	|hl-WildMenu|.
 
 						*'wildmode'* *'wim'*
-'wildmode' 'wim'	string	(default: "list:longest,full")
+'wildmode' 'wim'	string	(default: "full")
 			global
 	Completion mode that is used for the character specified with
 	'wildchar'.  It is a comma separated list of up to four parts.  Each

runtime/doc/vim_diff.txt

@@ -51,7 +51,6 @@ these differences.
 - 'ttyfast' is always set
 - 'viminfo' includes "!"
 - 'wildmenu' is set by default
-- 'wildmode' defaults to "list:longest,full"
 
 ==============================================================================
 3. Changed features					 *nvim-features-changed*

src/nvim/options.lua

@@ -2660,7 +2660,7 @@ return {
       deny_duplicates=true,
       vim=true,
       varname='p_wim',
-      defaults={if_true={vi="", vim="list:longest,full"}}
+      defaults={if_true={vi="", vim="full"}}
     },
     {
       full_name='wildoptions', abbreviation='wop',