Describe the bug
When using ctrl w to kill the word it consides - as separator instead of space.

To Reproduce

• lets say we have this in the zsh terminal
  ➜ ~ this is a word-with-hyphen
  pressing ctrl + w deletes the word hyphen first and then with. i.e considering the - as the delimiter. However i'd like to use space as the delimiter instead. so that pressing ctrl-W
  deletes the whole word word-with-hyphen. If i dont use Oh My Zsh settings it deletes the whole word ignoring -, which is expected.

Expected behavior
ctrl-W should delete the whole word ignoring -

Screenshots and/or Recordings
N/A

Desktop (please complete the following information):

• OS / Distro: macOS
• Latest ohmyzsh Update?: Yes
• ZSH Version: 5.7.1
• iTerm2