Fix overflow in AttachmentSection

[anddea]

Contributor checklist:

• My contribution is not related to translations.
• My commits are in nice logical chunks with good commit messages.
• My changes are rebased on the latest main branch.
• A yarn ready run passes successfully (more about tests here).
• My changes are ready to be shipped to users.

Description

This commit will truncate long titles of documents in attachment section.
To reproduce, just upload a document with a long title and open attachments, then resize window.

Screenshots

Before

After

[ayumi-signal]

@anddea Hello, thanks for your contribution. It looks like you've made a design/frontend related change, however it's not clear exactly what the change affects.

1. Can you provide an issue # and/or Reproduction steps/Test plan; and
2. Provide screenshots showing before/after the change?

Additionally, it looks like the Contributor License Agreement hasn't been signed. Before we can merge this commit you would need to sign that.

[anddea]

Hello, @ayumi-signal. I added screenshots to original message.