Fix Waveshare S3 home fingerprint

[oroderico]

Root Cause

On Waveshare ESP32-S3 LCD Touch (portrait), the Home screen header has less
horizontal space than landscape boards. The default title uses the full
device_name string (e.g. Jade <short-id>), which can be clipped on the
portrait header.

The device identifier itself is correct; only the rendering is affected.

Fix

For Waveshare S3 only (CONFIG_BOARD_TYPE_WS_TOUCH_LCD2), adjust the Home
screen activity title:

• When the device name matches the expected Jade prefix, the UI uses only
  the suffix portion (skipping the Jade prefix) as the title.
• This reduces the title width in portrait mode and avoids truncation.

Implementation Notes

• Minimal, localized change: only affects the Home screen title argument passed
  to gui_make_activity_ex().
• No changes to ID generation, session/scan logic, or other boards.

[jgriffiths]

Hi, I think the problem of titles being too wide for screens in given orientations should be considered a generic one, and so fixed generically rather than on a per-screen and/or per-device basis, even if this needs to be opted into with a flag.

[oroderico]

I can fix this, but I did it this way because I didn't have other boards to test the behavior of the fix. Can I adjust the code?