Steps to reproduce:
1. Create a new project and install the "AI Generators" package
2. In the Project window, right-click -> Create -> Audio -> Generate Audio Clip
3. Press “Start Recording” button
4. Press “Stop Recording” button and observe

Actual results: “ArgumentException: Frequency of recording must be greater than zero (was: 0 Hz)” error is thrown and “Stop Recording” button cannot be pressed
Expected results: “Stop Recording” button can be pressed and recording is stopped

Reproducible with versions: AI Generators 1.0.0-pre.6 (6000.2.0a10)

Tested on (OS): Ubuntu 22.04