Add a collapsed parameter to GLQL

What does this MR do and why?

Add a collapsed parameter to GLQL

• Add a parameter collapsed to collapse a GLQL view by default.
• Some component cleanup
  • Remove eventHub and queryKey usage in actions.vue
  • Remove dropdown removal logic from copy_as_gfm for GLQL. This is not necessary anymore since the crud component was moved from table.vue/list.vue to facade.vue (parent) in !196188 (merged)
  • Rename footer.vue to pagination.vue since it just has a load more button

Changelog: added

References

• https://gitlab.slack.com/archives/C07HUEF4VPD/p1752590954440269
• Fixes #554127 (closed)

Screenshots or screen recordings

After

How to set up and validate locally

Create a collapsed GLQL view and save. It should stay collapsed by default.

```glql
title: Foobar
query: type = Issue
collapsed: true
```

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.