📌 Biqu BX temporary framework workaround (#23131)

buildroot/share/PlatformIO/scripts/generic_create_variant.py

 	else:
 		platform_name = PackageSpec(platform_packages[0]).name
 
-	if platform_name in [ "usb-host-msc", "usb-host-msc-cdc-msc", "usb-host-msc-cdc-msc-2", "usb-host-msc-cdc-msc-3", "tool-stm32duino" ]:
+	if platform_name in [ "usb-host-msc", "usb-host-msc-cdc-msc", "usb-host-msc-cdc-msc-2", "usb-host-msc-cdc-msc-3", "tool-stm32duino", "biqu-bx-workaround" ]:
 		platform_name = "framework-arduinoststm32"
 
 	FRAMEWORK_DIR = platform.get_package_dir(platform_name)

ini/stm32h7.ini

 [env:BTT_SKR_SE_BX]
 platform           = ${common_stm32.platform}
 extends            = stm32_variant
-platform_packages  = ${stm_flash_drive.platform_packages}
+platform_packages  = framework-arduinoststm32@https://github.com/thisiskeithb/Arduino_Core_STM32/archive/biqu-bx-workaround.zip
 board              = marlin_BTT_SKR_SE_BX
 board_build.offset = 0x20000
 build_flags        = ${stm32_variant.build_flags} ${stm_flash_drive.build_flags}