[BUG] 500 error when trying to save using 12-hour format from the time picker in Ver 2026.06.1 #2988

Description

"Advanced schedule Play From/Play Until fields throw 500 error when using 12-hour AM/PM format from the time picker in version 2026.06.1"

Steps to Reproduce

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected Behavior

A clear and concise description of what you expected to happen.

Screenshots

If applicable, add screenshots to help explain your problem.

Environment

• Device: [e.g., Raspberry Pi 5, Raspberry Pi 4, PC]
• OS: [e.g., balenaOS, Raspberry Pi OS 64-bit Bookworm, Trixie]
• Anthias Version: [e.g., v0.19.0]
• Installation Method: [e.g., balenaHub, Release Image, Manual Installation]