fix: exiting range operation will remove a letter (#62)

This commit fixed the issue that exiting the range operator pending
status (e.g. stroking df<ESC>) will remove a letter at cursor position.

zsh-vi-mode.zsh

@@ -1208,6 +1208,7 @@ function zvm_range_handler() {
   #  [cdy]Ff -> `foo.ba`
   #  [cdyv]tz -> `r.ba`
   #  [cdy]Tf -> `oo.ba`
+  #
 
   # Pre navigation handling
   local navkey="${keys:1}"
@@ -1253,6 +1254,12 @@ function zvm_range_handler() {
     *) zvm_navigation_handler "${navkey}"
   esac
 
+  # Check if there is no range selected
+  if ((cursor == CURSOR)) && [[ $mode == $ZVM_MODE_VISUAL ]]; then
+      zvm_exit_visual_mode
+      return
+  fi
+
   # Post navigation handling
   case "${keys}" in
     [cdy]*i[wW]) cursor=$MARK;;