Ignore-User Dialogue

### Your use case

#### What would you like to do?
- Add a question mark to the heading.
- Remove "Are you sure you want to ignore them?"
**Or** replace with:
1. "They won't know you ignored them."
2. "You can unignore them later in Settings: Security & Privacy."
#### Why would you like to do it?
Simplify and give more useful information in the body.
#### How would you like to achieve it?
> ### Ignore '*username*'?
> All messages and invites from this user will be hidden.

### Have you considered any alternatives?

### 1.
> ### Ignore '*username*'?
> All messages and invites from this user will be hidden. They won't know you ignored them.
### 2.
> All messages and invites from this user will be hidden. You can unignore them later in Settings: Security & Privacy.

### Additional context

_No response_

Search the repository for the “Ignore” dialogue heading and the existing confirmation text, then inspect the surrounding user-ignore UI. Update the heading and body to match the selected wording from the issue, and verify that the dialogue displays the intended copy.

Written by the indexing model from the issue text.