F3 is not decoded properly in kitty

[neurocyte]

Please include the following data:

• export | egrep 'LANG|LC_CTYPE|TERM'

COLORTERM truecolor
GDM_LANG en_US.UTF-8
LANG en_US.UTF-8
TERM xterm-kitty
TERMINAL kitty

• notcurses version (available from notcurses-demo i)

notcurses 3.0.9 on Kitty 0.28.1 (Linux 6.4.3-1-MANJARO)
57 rows (24px) 189 cols (9px) 1368x1701 rgb+256 colors
gcc-12.2.1 20230211 (LE)
terminfo 6.4.20230520 libdeflate 1.18 GPM 2.1.0

• terminal name + version
  kitty 0.28.1 created by Kovid Goyal

When running in kitty the F3 key gets passed through to my application as a raw escape sequence instead of an F3 key event. The same thing happens in notcurses-input which you can see in this screenshot:

This seems to be kitty specific. None of the other terminals I have tested seem to show this F3 specific decoding problem.