runtime(lua): update 'path' option in filetype plugin

Problem:  Lua doesn't support importing module in path related to current
          file like JS does (https://www.reddit.com/r/lua/comments/wi0bau/whats_the_correct_way_to_run_a_lua_file_that_uses/)
Solution: Remove `.` from Lua buffer-local option `'path'`

closes: #17267

Signed-off-by: Phạm Bình An <phambinhanctb2004@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/ftplugin/lua.vim b/runtime/ftplugin/lua.vim
index 33471cc..e3bb3a5 100644
--- a/runtime/ftplugin/lua.vim
+++ b/runtime/ftplugin/lua.vim
@@ -9,6 +9,7 @@
 "			Phạm Bình An <phambinhanctb2004@gmail.com>
 "			@konfekt
 " Last Change:		2025 Apr 04
+" 2025 May 06 by Vim Project update 'path' setting #17267
 
 if exists("b:did_ftplugin")
   finish
@@ -31,6 +32,7 @@
 setlocal comments=:---,:--
 setlocal commentstring=--\ %s
 setlocal formatoptions-=t formatoptions+=croql
+setlocal path-=. " Lua doesn't support importing module in path related to current file like JS
 
 let &l:define = '\<function\|\<local\%(\s\+function\)\='
 
@@ -38,7 +40,7 @@
 setlocal includeexpr=s:LuaInclude(v:fname)
 setlocal suffixesadd=.lua
 
-let b:undo_ftplugin = "setl cms< com< def< fo< inc< inex< sua<"
+let b:undo_ftplugin = "setl cms< com< def< fo< inc< inex< sua< pa<"
 
 if exists("loaded_matchit") && !exists("b:match_words")
   let b:match_ignorecase = 0