Added default values for _Tile offset and args

[radarhere]

Pillow/src/PIL/ImageFile.py

Lines 98 to 102 in 5bff2f3

	class _Tile(NamedTuple):
	codec_name: str
	extents: tuple[int, int, int, int] | None
	offset: int
	args: tuple[Any, ...] | str | None

Adding defaults of 0 for offset and None for args will allow small simplifications to some instantiations of ImageFile._Tile.

An args value of (mode, 0, 1) can also be replaced by mode

Pillow/src/PIL/ImageFile.py

Lines 221 to 222 in 5bff2f3

	if isinstance(args, str):
	args = (args, 0, 1)