build

Make Biset's panels work with Light Mode. #2231

Job	Run time
linux-x86_64-debug	32m 11s
macos	25m 42s
linux (aarch64)	48m 21s
linux (armhf)	58m 2s
linux (x86_64)	37m 47s
linux (i686)	47m 6s
linux (riscv64)	45m 44s
wasm (nosimd)	21m 48s
windows (win32)	31m 46s
windows (win64)	36m 35s
mod-plugin-builder (modduox, modduox-static)	45m 7s
mod-plugin-builder (darkglass-anagram, darkglass-anagram)	49m 37s
mod-plugin-builder (modduo, modduo-static, MODDUO=true)	45m 51s
lto	38m 11s
mod-plugin-builder (moddwarf, moddwarf)	44m 45s
headless	28m 25s
sysdeps	29m 4s
source-tarball	15m 36s
plugin-validation	53m 19s
wasm (simd)	21m 33s
	12h 36m 30s

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