vim-patch:9.1.0555: filetype: angular ft detection is still problematic

Problem:  filetype: angular ft detection is still problematic
          (after 9.1.0551)
Solution: detect htmlangular filetype only by inspecting the content,
          do not try to determine it from a generic name like
          '*.component.html'

For the reasons mentioned here:

https://github.com/vim/vim/pull/13594#issuecomment-1834465890

related: vim/vim#15190
related: vim/vim#13594
related: vim/vim#13604

c03f631b7b

Co-authored-by: Christian Brabandt <cb@256bit.org>

runtime/lua/vim/filetype/detect.lua

@@ -710,12 +710,13 @@ function M.haredoc(path, _)
 end
 
 --- @type vim.filetype.mapfn
-function M.html(path, bufnr)
-  -- Test if the filename follows the Angular component template convention
-  local filename = fn.fnamemodify(path, ':t')
-  if filename:find('%.component%.html$') then
-    return 'htmlangular'
-  end
+function M.html(_, bufnr)
+  -- Disabled for the reasons mentioned here:
+  -- https://github.com/vim/vim/pull/13594#issuecomment-1834465890
+  -- local filename = fn.fnamemodify(path, ':t')
+  -- if filename:find('%.component%.html$') then
+  --   return 'htmlangular'
+  -- end
 
   for _, line in ipairs(getlines(bufnr, 1, 40)) do
     if