Add ability to customize hold-to-peek image duration

[hjiangsu]

Pull Request Description

This PR adds a new setting which allows configuring the hold-to-peek duration for images, and reduces the default duration to 300ms.

Issue Being Fixed

Issue Number: #1699

Screenshots / Recordings

Checklist

• If a new package was added, did you ensure it uses an appropriate license and is actively maintained?
• Did you use localized strings (and added appropriate descriptions) where applicable?
• Did you add semanticLabels where applicable for accessibility?