Fix treesit-parser-set-included-ranges

Fix treesit-parser-set-included-ranges

Track whether a parser has ranges set ourselves.  See comment in
Ftreesit_parser_included_ranges for detail.

* src/treesit.c (make_treesit_parser): Initialize has_range.
(Ftreesit_parser_set_included_ranges): Set has_range.  Fill docstring.
(Ftreesit_parser_included_ranges): Check has_range.
* src/treesit.h (Lisp_TS_Parser): Add has_range.