SubGHz: Princeton - Add check for wrong guard_time values and show guard time in UI

[xMasterX]

What's new

• SubGHz: Princeton - Added check for wrong guard_time values, limit minimum to 15 and maximum to 72
• Added guard time to UI

Verification

• Transmit and receive princeton signals

Checklist (For Reviewer)

• [x] PR has description of feature/bug or link to Confluence/Jira task
• [x] Description contains actions to verify feature/bugfix
• [x] I've built this code, uploaded it to the device and verified feature/bugfix