terminal: strikethrough text (#7507)

#7363 added support for rendering strikethrough text, so now we can
handle this case in the terminal.

Should close: #7434

Before:

![image](https://github.com/zed-industries/zed/assets/53836821/cb7a4eae-5bc9-425c-974d-07a9f089917a)

After:

![image](https://github.com/zed-industries/zed/assets/53836821/5aaacee2-95bc-4039-972d-96bd7c01ea59)

Release Notes:

- Fixed rendering strikethrough text inside the terminal #7434
6cdd7796c3Bennet Bo Fenner committed on 2/7/2024, 11:36:30 PM· committed by GitHubparentf55aba5
1 file changedLine totals unavailable