🔨 Native USB modified env followup (#24669)

Followup to #24619

.github/workflows/test-builds.yml

         - LERDGEX
         - LERDGEK
         - mks_robin_nano_v1v2
-        - mks_robin_nano_v1_2_usbmod
-        - mks_robin_nano_v1_3_f4_usbmod
+        #- mks_robin_nano_v1v2_usbmod
+        #- mks_robin_nano_v1_3_f4_usbmod
         - NUCLEO_F767ZI
         - REMRAM_V1
         - BTT_SKR_SE_BX

Marlin/src/pins/pins.h

 #elif MB(MKS_ROBIN_MINI)
   #include "stm32f1/pins_MKS_ROBIN_MINI.h"      // STM32F1                                env:mks_robin_mini env:mks_robin_mini_maple
 #elif MB(MKS_ROBIN_NANO)
-  #include "stm32f1/pins_MKS_ROBIN_NANO.h"      // STM32F1                                env:mks_robin_nano_v1v2 env:mks_robin_nano_v1v2_maple env:mks_robin_nano_v1_2_usbmod
+  #include "stm32f1/pins_MKS_ROBIN_NANO.h"      // STM32F1                                env:mks_robin_nano_v1v2 env:mks_robin_nano_v1v2_maple env:mks_robin_nano_v1v2_usbmod
 #elif MB(MKS_ROBIN_NANO_V2)
   #include "stm32f1/pins_MKS_ROBIN_NANO_V2.h"   // STM32F1                                env:mks_robin_nano_v1v2 env:mks_robin_nano3_v1v2_maple
 #elif MB(MKS_ROBIN_LITE)

buildroot/tests/mks_robin_nano_v1_3_f4_usbmod

 #!/usr/bin/env bash
 #
-# Build tests for MKS Robin nano
+# Build tests for MKS Robin nano v1.3 with native USB modification
 # (STM32F4 genericSTM32F407VE)
 #
 
 set -e
 
 #
-# MKS/ZNP Robin nano v1.3 Emulated DOGM FSMC and native USB mod
+# MKS/ZNP Robin nano v1.3 with Emulated DOGM FSMC and native USB mod
 #
 use_example_configs Mks/Robin
 opt_add USB_MOD
 opt_set MOTHERBOARD BOARD_MKS_ROBIN_NANO_V1_3_F4 SERIAL_PORT -1
-exec_test $1 $2 "MKS/ZNP Robin nano v1.3 Emulated DOGM FSMC and native USB mod" "$3"
+exec_test $1 $2 "MKS/ZNP Robin nano v1.3 with Emulated DOGM FSMC (native USB mod)" "$3"
 
 # cleanup
 restore_configs

buildroot/tests/mks_robin_nano_v1_2_usbmod → buildroot/tests/mks_robin_nano_v1v2_usbmod

 #!/usr/bin/env bash
 #
-# Build tests for MKS Robin nano
+# Build tests for MKS Robin nano V1.2 and V2 with native USB modification
 # (STM32F1 genericSTM32F103VE)
 #
 
 set -e
 
 #
-# MKS/ZNP Robin nano v1.2 Emulated DOGM FSMC and native USB mod
+# MKS/ZNP Robin nano v1.2 with Emulated DOGM FSMC
 #
 use_example_configs Mks/Robin
 opt_add USB_MOD
 opt_set MOTHERBOARD BOARD_MKS_ROBIN_NANO SERIAL_PORT -1
-exec_test $1 $2 "MKS/ZNP Robin nano v1.2 Emulated DOGM FSMC and native USB mod" "$3"
+exec_test $1 $2 "MKS/ZNP Robin nano v1.2 with Emulated DOGM FSMC (native USB mod)" "$3"
 
 # cleanup
 restore_configs

ini/stm32f1.ini

                               -DUSBCON -DUSBD_USE_CDC
 
 #
-# MKS/ZNP Robin Nano v1.2 with native USB modification
+# MKS/ZNP Robin Nano V1.2 and V2 with native USB modification
 #
-[env:mks_robin_nano_v1_2_usbmod]
+[env:mks_robin_nano_v1v2_usbmod]
 extends                     = mks_robin_nano_v1v2_common
 build_flags                 = ${common_stm32.build_flags}
                               -DMCU_STM32F103VE -DSS_TIMER=4