COLR/OT-SVG fonts will cause BadLength error with "Xft.rgba: none"

Test program

• xfttest.c
• https://pypi.org/project/fonttools/ (to attempt dropping COLR/SVG from font)

Tested fonts

• HarmonyOS_Sans_Regular.ttf from https://developer.huawei.com/images/download/next/HarmonyOS-Sans.zip (COLR+SVG)
• JuliaMono-Regular.ttf from https://github.com/cormullion/juliamono/releases/download/v0.055/JuliaMono-ttf.zip (SVG only)
• Segoe UI Emoji (seguiemj.ttf) from Windows 11 (COLR only)

Some other COLR(v0) font will NOT trigger this issue:

• https://tools.djr.com/misc/bradley-initials/fonts/BradleyInitialsDJR-Regular.woff2

Steps to Reproduce

$ Xephyr :9 &
$ export DISPLAY=:9
$ xeyes &  # make xrdb happy

$ xrdb <<< 'Xft.rgba: none'
$ ./xfttest HarmonyOS_Sans_Regular.ttf "hello" 
extents: width=27 height=11 x=0 y=10 xoff=27 yoff=0
X Error of failed request:  BadLength (poly request too large or internal Xlib length error)
  Major opcode of failed request:  139 (RENDER)
  Minor opcode of failed request:  20 (RenderAddGlyphs)
  Serial number of failed request:  11
  Current serial number in output stream:  17

$ xrdb <<< 'Xft.rgba: rgb'
$ ./xfttest HarmonyOS_Sans_Regular.ttf "hello"
extents: width=28 height=11 x=0 y=10 xoff=27 yoff=0
(no error)

$ xrdb <<< 'Xft.rgba: none'
$ # drop COLR and SVG from font
$ ttx -x 'COLR' -x 'CPAL' -x 'SVG ' -o - JuliaMono-Regular.ttf | ttx -o a.ttf -
$ ./xfttest a.ttf "hello"         
extents: width=27 height=11 x=0 y=10 xoff=27 yoff=0
(no error)

$ # dropping either COLR or SVG is not sufficient
$ ttx -x 'COLR' -x 'CPAL' -o - HarmonyOS_Sans_Regular.ttf | ttx -o b.ttf -
$ ttx -x 'SVG ' -o - HarmonyOS_Sans_Regular.ttf | ttx -o c.ttf -
$ ./xfttest b.ttf "hello"
extents: width=27 height=11 x=0 y=10 xoff=27 yoff=0
X Error of failed request:  BadLength (poly request too large or internal Xlib length error)
  Major opcode of failed request:  139 (RENDER)
  Minor opcode of failed request:  20 (RenderAddGlyphs)
  Serial number of failed request:  11
  Current serial number in output stream:  17
$ ./xfttest c.ttf "hello"
extents: width=27 height=11 x=0 y=10 xoff=27 yoff=0
X Error of failed request:  BadLength (poly request too large or internal Xlib length error)
  Major opcode of failed request:  139 (RENDER)
  Minor opcode of failed request:  20 (RenderAddGlyphs)
  Serial number of failed request:  11
  Current serial number in output stream:  17