[BUG] `require-closing-tags` misses unclosed `<script> tags

**Describe the bug**
The `require-closing-tags` rule does not catch unclosed `<script>` and `<style>` tags.

**To Reproduce**
Steps to reproduce the behavior:

1. Add an unclosed `<script>` or `<style>` tag.

**Expected behavior**
Lint error.

**Additional context**
These are both "raw text elements" in the standard, and closing tags are required.
