[Keymap] Update brauner preonic layout

[brauner]

Adapt to changes that make IGNORE_MOD_TAP_INTERRUPT the default.

[elpekenin]

Not a big difference, but writing it like this reduces repetition a bit, and would help adding other keycodes here easier and faster in the future

Suggested change

	case MOD_TAP_LSFT_ESC:
	/* Immediately select the hold action when another key is pressed. */
	return true;
	case MOD_TAP_LSFT_ENT:
	/* Immediately select the hold action when another key is pressed. */
	return true;
	case MOD_TAP_LSFT_ESC:
	case MOD_TAP_LSFT_ENT:
	/* Immediately select the hold action when another key is pressed. */
	return true;

[brauner]

I'm fine with that change. Note, that if you do allow that in the code you probably want to use fallthrough semantics going forward, i.e.,

  #if HAVE_COMPILER_ATTR_FALLTHROUGH || __GNUC__ >= 7
  #define fallthrough __attribute__((__fallthrough__))
  #else
  #define fallthrough /* fall through */
  #endif

  bool get_hold_on_other_key_press(uint16_t keycode, keyrecord_t *record) {
      switch (keycode) {
          case MOD_TAP_LSFT_ESC:
              fallthrough;
          case MOD_TAP_LSFT_ENT:
              /* Immediately select the hold action when another key is pressed. */
              return true;
          default:
              /* Do not select the hold action when another key is pressed. */
              return false;
      }
  }

Then all places can be converted to use fallthrough and then you can ultimately enable -Wimplicit-fallthrough=5.

[brauner]

updated