vim-patch:9.2.0025: filetype: cshtml incorrectly recognized (#37957)

Problem:  filetype: cshtml incorrectly recognized, razor files are not
          recognized
Solution: Detect *.cshtml and *.razor files as razor filetype
          (tris203)

Reference:
https://learn.microsoft.com/en-us/aspnet/core/mvc/views/razor?view=aspnetcore-10.0

closes: vim/vim#19207

68dbb58d51

Co-authored-by: tris203 <admin@snappeh.com>

runtime/lua/vim/filetype.lua

@@ -372,7 +372,6 @@ local extension = {
   cs = 'cs',
   csc = 'csc',
   csdl = 'csdl',
-  cshtml = 'html',
   fdr = 'csp',
   csp = 'csp',
   css = 'css',
@@ -1068,6 +1067,8 @@ local extension = {
   MODx = 'rapid',
   rasi = 'rasi',
   rasinc = 'rasi',
+  cshtml = 'razor',
+  razor = 'razor',
   rbs = 'rbs',
   rego = 'rego',
   rem = 'remind',