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: #15190
related: #13594
related: #13604

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 0de9c55..96691df 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    555,
+/**/
     554,
 /**/
     553,