Fix: Streamline the confusing DM invite user experience

[wolterkam]

This PR fixes two UX snags in direct message rooms, giving users the context they need to act with intent, and aligns the experience with how people naturally expect chat conversations to work.

The Problem

In direct messages, the "Invite Member" button appears directly underneath the other person's name. This layout is confusing because it looks like an action directed at the person you are already talking to. Additionally, adding a third person to a 1:1 conversation breaks standard chat expectations. Most users assume adding people to a DM turns it into a group chat, and seeing multiple members in a standard DM reads like a bug rather than a feature.

The Solution

To fix this, the button text is now "Invite another Member" to clearly communicate you are adding a new person to the existing conversation.

I also added a soft-opinionated gate before the invite screen opens in DM rooms. This prompt explains your choices when adding members to a 1:1 chat and allows the user to act with intent before proceeding. This update aligns the app with standard user mental models.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• 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
• My changes generate no new warnings

[github-actions]

All contributors have signed the CLA ✍️ ✅
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[wolterkam]

I have read the CLA Document and I hereby sign the CLA

[ajbura]

hey, can you share link to the issue this PR is fixing?

[wolterkam]

hey, can you share link to the issue this PR is fixing?

Caught it organically while onboarding a new user.