Disable example with Speech to text in `apps/llm` on emulator

[msluszniak]

Description

Currently, when one runs example from llm directory, clicking on a button with a microphone crashes with an error. I think that the whole example should be either disabled on emulator or handled similarly as in the apps/speech-to-text (look below).

Steps to reproduce

1. Download packages
2. Run apps/llm example on emulator
3. Move to Speech to text section using top slider
4. Click the microphone button

Snack or a link to a repository

No snack needed

React Native Executorch version

main branch

React Native version

0.79.2

Platforms

iOS

JavaScript runtime

None

Workflow

Expo Dev Client

Architecture

Fabric (New Architecture)

Build type

Debug mode

Device

iOS simulator

Device model

Iphone 16 Pro

AI model

model from apps/llm example

Performance logs

No response

Acknowledgements

Yes