Make repr tag highlighting greedy

Addressing Textualize#2468; before this change the tag-matching code was non-greedy,
resulting in an unbalanced match if there were tags within tags. This
change makes this greedy to ensure that there's a better chance of the match
being balanced.

rich/highlighter.py

@@ -82,7 +82,7 @@ class ReprHighlighter(RegexHighlighter):
 
     base_style = "repr."
     highlights = [
-        r"(?P<tag_start><)(?P<tag_name>[-\w.:|]*)(?P<tag_contents>[\w\W]*?)(?P<tag_end>>)",
+        r"(?P<tag_start><)(?P<tag_name>[-\w.:|]*)(?P<tag_contents>[\w\W]*)(?P<tag_end>>)",
         r'(?P<attrib_name>[\w_]{1,50})=(?P<attrib_value>"?[\w_]+"?)?',
         r"(?P<brace>[][{}()])",
         _combine_regex(