vim-patch:9.0.0427: Drupal theme files are not recognized (#20138)

Problem:    Drupal theme files are not recognized.
Solution:   Use php filetype for Drupl theme files.  Remove trailing spaces.
            (Rodrigo Aguilera, closes vim/vim#11096)
8995c4cd4e

runtime/lua/vim/filetype.lua

@@ -746,6 +746,7 @@ local extension = {
   php = 'php',
   phpt = 'php',
   phtml = 'php',
+  theme = 'php',
   pike = 'pike',
   pmod = 'pike',
   rcp = 'pilrc',