Missing changes for static files to handle alternate CSRF cookie name

PR #287 allowed configuring the CSRF cookie name.
It was merged to `master` in October 2025.
https://github.com/agusmakmun/django-markdown-editor/commit/a1a5acc464993843b283c76547ae8f67157b2291#diff-b63b71f1ace25c826f72468fc4212660d8590280af57bd8be0d962118d378ad0

History to individual JS file does not show the commit from October 2025:
https://github.com/agusmakmun/django-markdown-editor/commits/master/martor/static/martor/js/martor.bootstrap.js

One of the key changes for handling the new CSRF cookie name is replacing:
```
getCookie('csrftoken')
```

With this:
```
getCookie(textareaId.data('csrf-cookie-name')));
```

Current `master` and version 1.8.2 somehow show the old code:
```
'csrfmiddlewaretoken': getCookie('csrftoken')
```
https://github.com/agusmakmun/django-markdown-editor/blob/master/martor/static/martor/js/martor.bootstrap.js#L95

(Permalink for historical context:
https://github.com/agusmakmun/django-markdown-editor/blob/0bf92e6b224b3596b815230b697d5bb6c431a884/martor/static/martor/js/martor.bootstrap.js#L95 )

The odd thing is that the setting change does remain, only the JavaScript file changes seem to have gone missing:
https://github.com/agusmakmun/django-markdown-editor/blob/master/martor/settings.py#L225-L229

(Permalink: https://github.com/agusmakmun/django-markdown-editor/blob/0bf92e6b224b3596b815230b697d5bb6c431a884/martor/settings.py#L225-L229 )

## Details
- OS (Operating System) version: MacOS
- Browser and browser version: Chrome
- Django version: 5.2
- Martor version & theme: 1.8.2 (no theme)

### Steps to reproduce

1. Change Django's `CSRF_COOKIE_NAME` to something else, then change `MARTOR_CSRF_COOKIE_NAME`
2. Despite changing `MARTOR_CSRF_COOKIE_NAME` to match the Django cookie name, see that the form still fails

See the code change in version 1.7.16
https://github.com/agusmakmun/django-markdown-editor/blob/v1.7.16/martor/static/martor/js/martor.bootstrap.js#L157
The fix is gone in version 1.8.2
https://github.com/agusmakmun/django-markdown-editor/blob/v1.8.2/martor/static/martor/js/martor.bootstrap.js#L157