With SELECT RANK, name mangling results in long internal symbols that
overflows internal buffers.  Fix that.

gcc/fortran/
	PR fortran/95828
	* match.c (select_rank_set_tmp): Enlarge internal buffer used in
	generating a mangled name.
	* resolve.c (resolve_select_rank): Likewise.

(cherry picked from commit 77d455ee81ec3a23f8b20259a31ab963716f8e82)