[BUG] unexpected behaviour on sub-list

[Phil]

Hello,

I'm reporting this bug on Org mode version 9.7.6.
It was in already in 9.5.

   - here is a list
     with a sub list

     - like here ;

     and then text (<- this will be deleted)
   x

 1) Trying to insert an other item above,
    by suppressing the "x", and hitting M-RET,
    if there's no text after, the command gets stuck
    in org-list-struct-apply-struct.

    file:~/.emacs.d/repos/org/lisp/org-list.el::1968
    Very likely, needs to check if forward line returns 0
    otherwise it will keep looping.

    #+begin_src patch
- (while (< (point) down)
+ (while (and ( < (point) down) (not(> lines-left-to-move 0)))
   #+end_src

    file:~/.emacs.d/repos/org/lisp/org-list.el::1982
    #+begin_src patch
 - (forward-line)))
 + (setq-local lines-left-to-move (forward-line)))))
    #+end_src

 2) after a break, C-g, or if there is some text,
    the previous paragraph is killed and the list
    structure re/dis-organized.


Cheers,

Phil