rm_templates: T8609: route_maps.py: address PR #470 review feedback
Two findings on route_maps.py from CodeRabbit review of PR #470.
- Five trailing-form patterns in parsers sequence, on_match_next, set_atomic_aggregate, set_extcommunity_bandwidth_non_transitive, and match_community_exact_match still had the (?P<name>...)\n *$ shape that collapses to (?P<name>...)*$ under re.VERBOSE. Collapsed each to \s*$ on the same line as the named group, matching the rest of the PR.
- The set_comm_list_delete parser captures (?P<delete>delete) (boolean token) and writes to set.comm_list.delete in result, but compval read set.comm_list.comm_list (the string sibling field defined in argspec/route_maps/route_maps.py:64). Changed compval to set.comm_list.delete so it lines up with the parser's capture and result path.