Setting an SVG image for a topic channel "works" on the Web clients, but isn't shown on (at least) the iOS client

**Describe the bug**
Setting an SVG image for a topic channel "works" on the Web clients, but isn't shown on (at least) the iOS client

**To Reproduce**
Steps to reproduce the behavior:
1. Set an SVG image as a channel icon
2. Look at the channel on an iOS device

**Expected behavior**
1. It is displayed

**Actual behaviour**
1. It is not displayed. A placeholder icon is used instead

**Desktop (please complete the following information):**
This client, the latest released version

**Smartphone (please complete the following information):**
No idea, this was reported by someone on matrix, they probably have a recent iOS.