jupyter-repl-update-cell-count: Only reset input prompts

There is no need to reset the prompt when it isn't displaying the cell count. This also ensures that a kernel that shows a prompt other than the input prompt doesn't get overwritten.

Author: nnicandro

jupyter-repl.el

@@ -416,7 +416,9 @@ should be a face that the prompt will use and defaults to
  (jupyter-repl-cell-beginning-position)
  'jupyter-cell))
  n)
- (jupyter-repl-cell-reset-prompt)))
+ (when (string-match-p
+ "In \\[[0-9]+\\]" (string-trim (jupyter-repl-prompt-string)))
+ (jupyter-repl-cell-reset-prompt))))
 
 (defun jupyter-repl-cell-count ()
  "Return the cell count of the cell at `point'."