Fixes [Z-2575 : HEEX files are using deprecated commenting
sytle](https://linear.app/zed-industries/issue/Z-2575/heex-files-are-using-deprecated-commenting-sytle)

- Fixed a bug where comment toggling and bracket matching used the wrong
characters in templating languages like ERB and HEEx
([#1724](https://github.com/zed-industries/community/issues/1724)).
- Fixed a bug where interpolated code was sometimes not parsed correctly
within templating languages like ERB and HEEx.