fix: trix and action text improvements

[adrianthedev]

Description

Fixes #2714

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

Screenshots & recording

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[adrianthedev]

@sedubois this PR fixes the caption issue.

I tried to replicate the hr issue you posted but it seems to be a Trix issue, not an Avo issue.
I created a reproduction area in the trix demo app under /posts.

You'll see that it does not save the hr either.
Please clone that repo and try it too.

CleanShot.2024-07-08.at.21.53.10.mp4

I'll merge this as is and if you find out anything about hr let's keep the conversation open.

[github-actions]

This PR has been merged into main. The functionality will be available in the next release.

Please check the release guide for more information.

[sedubois]

Thank you so much @adrianthedev for fixing captions 👍
The hr issue is less blocking, will have a look if I find bandwidth.