[Bug]: Multi-ControlNet XYZ plot support is broken

Is there an existing issue for this?

• I have searched the existing issues and checked the recent builds/commits of both this extension and the webui

What happened?

Now the ControlNet XYZ options have force type checking, which brakes the support of list notation style merged in #407

Steps to reproduce the problem

1. Go to XYZ plot
2. Select ControlNet Enable
3. It is forced to enter true or false, not the list notation

What should have happened?

Should be able to enter the list notation

Commit where the problem happens

webui: v1.2.1-3-g6c996583 controlnet: 356fd3c0 (Sun May 14 02:47:11 2023)

What browsers do you use to access the UI ?

Microsoft Edge

Command Line Arguments

--skip-version-check --opt-sdp-attention --api --theme=light

Console logs

No, It's block by the frontend

Additional information

No response