vim-patch:9.0.1425: "wat" and "wast" files are one filetype (#22774)

Problem:    "wat" and "wast" files are one filetype.
Solution:   Add a separate filetype for "wat" files. (Amaan Qureshi,
            closes vim/vim#12165)

3ea62381c5

Co-authored-by: Amaan Qureshi <amaanq12@gmail.com>

runtime/lua/vim/filetype.lua

@@ -1103,8 +1103,8 @@ local extension = {
   wrl = 'vrml',
   vroom = 'vroom',
   vue = 'vue',
-  wat = 'wast',
   wast = 'wast',
+  wat = 'wat',
   wdl = 'wdl',
   wm = 'webmacro',
   wbt = 'winbatch',

test/old/testdir/test_filetype.vim

@@ -658,7 +658,8 @@ let s:filename_checks = {
     \ 'vrml': ['file.wrl'],
     \ 'vroom': ['file.vroom'],
     \ 'vue': ['file.vue'],
-    \ 'wast': ['file.wast', 'file.wat'],
+    \ 'wat': ['file.wat'],
+    \ 'wast': ['file.wast'],
     \ 'wdl': ['file.wdl'],
     \ 'webmacro': ['file.wm'],
     \ 'wget': ['.wgetrc', 'wgetrc'],