firmware is not built with luci-theme-materialgrey

[valerafcc]

Package Luci https://github.com/ofmodemsandmen/RooterSource/blob/main/feeds/luci/collections/luci/Makefile#L15

LUCI_DEPENDS:= \
	+uhttpd +luci-mod-admin-full +luci-theme-material \

build error:

Collected errors:
 * check_data_file_clashes: Package luci-theme-materialgrey wants to install file /home/test/123/source/build_dir/target-mipsel_24kc_musl/root-ramips/etc/config/material
	But that file is already provided by package  * luci-theme-material
 * opkg_install_cmd: Cannot install package luci-theme-materialgrey.