Android: Fix mismatching JNI method signature

Another regression from commit dca3fd8307c2c9ebda8d8ea623bbbf19649f5e22,
which was a backport of commit de3909a190f6e1a3f11776ce42927f99b0381675
from SDL3 to SDL2. This time the regression is much less apparent,
however, due to two reasons:

- It only appears when the SDL project is ran on an actual device
  due to magic stringage.

- More importantly, the regression was partially hidden due to
  the nature of de3909a190f6e1a3f11776ce42927f99b0381675.

  The commit which was backported added a single `I` to the JNI method
  signature in `SDL_android.c`, representing the added `int axis_mask`
  parameter. The parameter was added to both SDL2 and SDL3.

  However, notably, that `I` was added *after* commit
  fcafe40948fe308cc9552df5a3d625ee2725de5a, which removed the
  `int nballs` parameter from the joystick API, but only from the SDL3
  branch.

  Therefore, in totality, what should really have been a merge conflict,
  was obscured by the fact that the SDL3 branch ended up having
  a net-identical JNI signature to the SDL2 branch, due to having
  one bool param removed and one added - while, in fact, the SDL2 branch
  needed one bool param added and none removed.

src/core/android/SDL_android.c

@@ -278,7 +278,7 @@ static JNINativeMethod SDLControllerManager_tab[] = {
     { "onNativePadUp", "(II)I", SDL_JAVA_CONTROLLER_INTERFACE(onNativePadUp) },
     { "onNativeJoy", "(IIF)V", SDL_JAVA_CONTROLLER_INTERFACE(onNativeJoy) },
     { "onNativeHat", "(IIII)V", SDL_JAVA_CONTROLLER_INTERFACE(onNativeHat) },
-    { "nativeAddJoystick", "(ILjava/lang/String;Ljava/lang/String;IIZIIII)I", SDL_JAVA_CONTROLLER_INTERFACE(nativeAddJoystick) },
+    { "nativeAddJoystick", "(ILjava/lang/String;Ljava/lang/String;IIZIIIII)I", SDL_JAVA_CONTROLLER_INTERFACE(nativeAddJoystick) },
     { "nativeRemoveJoystick", "(I)I", SDL_JAVA_CONTROLLER_INTERFACE(nativeRemoveJoystick) },
     { "nativeAddHaptic", "(ILjava/lang/String;)I", SDL_JAVA_CONTROLLER_INTERFACE(nativeAddHaptic) },
     { "nativeRemoveHaptic", "(I)I", SDL_JAVA_CONTROLLER_INTERFACE(nativeRemoveHaptic) }