Cannot change playback speed when using VoiceOver

• I have searched open and closed issues for duplicates
• I am submitting a bug report for existing functionality that does not work as intended
• This isn't a feature request or a discussion topic

Bug description

When playing back voice messages, and having VoiceOver running, it is not possible to change the playback speed. VoiceOver doesn't see the button to switch playback speed, and there is no custom action on the message item to accomplish the same task'

Steps to reproduce

• Turn on
• VoiceOverOpen a chat that contains a voice message and play
• Try to find the button to toggle playback speed by either exploring by touch or flicking left and right through elements.
• Flick up and down through the custom rotor actions to find an action to change playback speed.

result: Neither touch exploration nor flicking through elements will find the button. Flicking up and down through custom rotor actions also doesn't give you an action to change playback speed.

Expected result: VoiceOver should either find the button or have a custom action available to toggle playback speed. A custom action is the preferred fix for this.

Screenshots

Device info

Device: iPhone 16 Pro Max

iOS version: 18.4.1

Signal version: 7.55

Link to debug log

Start by locating the iOS voice-message playback UI and reproduce the issue with VoiceOver enabled. Inspect how the playback-speed control is exposed to accessibility, then verify that VoiceOver can reach the control or use a custom action to change speed.