Workaround for broken ChibiOS startup (qmk#23822)

Author: zvecr

platforms/chibios/boards/GENERIC_STM32_G431XB/configs/mcuconf.h

@@ -62,7 +62,7 @@
 #define STM32_HSI16_ENABLED                 TRUE
 #define STM32_HSI48_ENABLED                 TRUE
 #define STM32_HSE_ENABLED                   FALSE
-#define STM32_LSI_ENABLED                   TRUE
+#define STM32_LSI_ENABLED                   FALSE
 #define STM32_LSE_ENABLED                   FALSE
 #define STM32_SW                            STM32_SW_PLLRCLK
 #define STM32_PLLSRC                        STM32_PLLSRC_HSI16

platforms/chibios/boards/GENERIC_STM32_L432XC/configs/mcuconf.h

@@ -43,7 +43,7 @@
 #define STM32_PLS                           STM32_PLS_LEV0
 #define STM32_HSI16_ENABLED                 TRUE
 #define STM32_HSI48_ENABLED                 TRUE
-#define STM32_LSI_ENABLED                   TRUE
+#define STM32_LSI_ENABLED                   FALSE
 #define STM32_HSE_ENABLED                   FALSE
 #define STM32_LSE_ENABLED                   FALSE
 #define STM32_MSIPLL_ENABLED                FALSE