Loc share ignores zoom

### Steps to reproduce

1. Send a loc share
2. Carefully frame the zoom so it’s as useful as possible
3. Note that the thing that sents sent ignores your zoom and zooms it in tight

### Outcome

I expected my framing not to be ignored.

### Your phone model

_No response_

### Operating system version

_No response_

### Application version

1.8.0 rc1

### Homeserver

_No response_

### Will you send logs?

No

Start by reproducing location sharing in the iOS app using the reported 1.8.0 rc1 version, then trace how the selected map zoom or framing is passed into the sent location preview. Done means the recipient sees the framing chosen before sending; the issue provides no file or test names, device, or operating-system details.

Written by the indexing model from the issue text.