Some Problems in iOS and Standalone Display Mode (PWA)

### Description

Hello,
I'm getting an error in Safari when using a project on Wordpress in Web Stories. I haven't been able to figure out the source of this and it only happens when I'm in a state. For more information, please see the bug report: https://github.com/GoogleForCreators/web-stories-wp/issues/11469

I don't know what you think, but I think it's an annoying problem.

Kind regards.

### Reproduction Steps

There is no problem when in the normal Safari tab. It only happens when saved as PWA (Share > Add to Home Screen > Add) and when in standalone display mode.

### Relevant Logs

_No response_

### Browser(s) Affected

_No response_

### OS(s) Affected

iOS 15.4.1

### Device(s) Affected

_No response_

### AMP Version Affected

_No response_

No source file, test, or entry point is identified. Start by reproducing the problem in Safari on iOS 15.4.1 after adding the project to the Home Screen and opening it in standalone mode, then compare it with a normal Safari tab. Done means the reported error is isolated and the standalone display mode works without it.

Written by the indexing model from the issue text.