Fix drop/shift/v2 compilation

[zvecr]

Description

Headers have changed on develop, which produces:

make clean drop/shift/v2:default
QMK Firmware 0.21.6
Deleting .build/ ... done.
Making drop/shift/v2 with keymap default

Generating: .build/obj_drop_shift_v2_default/src/info_deps.d                                        [OK]
arm-none-eabi-gcc (Arch Repository) 13.1.0
Copyright (C) 2023 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Generating: .build/obj_drop_shift_v2_default/src/info_config.h                                     Generating: .build/obj_drop_shift_v2_default/src/default_keyboard.c                                Generating: .build/obj_drop_shift_v2_default/src/default_keyboard.h                                 [OK]
 [OK]
 [OK]
Compiling: platforms/chibios/drivers/analog.c                                                      Compiling: keyboards/drop/lib/common.c                                                             Compiling: keyboards/drop/lib/mux.c                                                                Compiling: keyboards/drop/shift/v2/v2.c                                                            Compiling: quantum/keymap_introspection.c                                                          Compiling: .build/obj_drop_shift_v2_default/src/default_keyboard.c                                 keyboards/drop/shift/v2/v2.c: In function 'rgb_matrix_indicators_kb':
keyboards/drop/shift/v2/v2.c:179:25: error: implicit declaration of function 'host_keyboard_led_state' [-Werror=implicit-function-declaration]
  179 |     uint8_t num_state = host_keyboard_led_state().num_lock ? 0xFF : 0;
      |                         ^~~~~~~~~~~~~~~~~~~~~~~
keyboards/drop/shift/v2/v2.c:179:50: error: request for member 'num_lock' in something not a structure or union
  179 |     uint8_t num_state = host_keyboard_led_state().num_lock ? 0xFF : 0;
      |                                                  ^
keyboards/drop/shift/v2/v2.c:180:51: error: request for member 'caps_lock' in something not a structure or union
  180 |     uint8_t caps_state = host_keyboard_led_state().caps_lock ? 0xFF : 0;
      |                                                   ^
keyboards/drop/shift/v2/v2.c:181:53: error: request for member 'scroll_lock' in something not a structure or union
  181 |     uint8_t scroll_state = host_keyboard_led_state().scroll_lock ? 0xFF : 0;
      |                                                     ^
cc1: all warnings being treated as errors

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).