Prevent TIFF orientation from being applied more than once

[radarhere]

Resolves #7381

When a TIFF image is loaded, the orientation is applied.

Pillow/src/PIL/TiffImagePlugin.py

Line 1545 in 52c6d68

self._tile_orientation = self.tag_v2.get(ExifTags.Base.Orientation)

Pillow/src/PIL/TiffImagePlugin.py

Lines 1205 to 1218 in 52c6d68

	def load_end(self):
	if self._tile_orientation:
	method = {
	2: Image.Transpose.FLIP_LEFT_RIGHT,
	3: Image.Transpose.ROTATE_180,
	4: Image.Transpose.FLIP_TOP_BOTTOM,
	5: Image.Transpose.TRANSPOSE,
	6: Image.Transpose.ROTATE_270,
	7: Image.Transpose.TRANSVERSE,
	8: Image.Transpose.ROTATE_90,
	}.get(self._tile_orientation)
	if method is not None:
	self.im = self.im.transpose(method)
	self._size = self.im.size

However, there is no change in Pillow's information about the image as a result of this. This is not ideal, because

1. if a user inspects the tag_v2 orientation for an image, it may or may not have been applied already, depending on whether the image has loaded, and that could be confusing.
2. If a user runs ImageOps.exif_transpose() afterwards, the orientation is applied a second time.

This PR addresses 1 by deleting the tag_v2 orientation tag, so that it is consistently present if not applied yet, and removed once it has been applied. It address 2 by calling ImageOps.exif_transpose(self, in_place=True) from TiffImagePlugin, which also reduces duplicate code.

The issue also calls exif_transpose() immediately after opening an image, without load(). So it is necessary to call load() the image in exif_transpose(), so that the image's orientation is not initially detected by exif_transpose, but then quickly changed once the image is loaded to perform a transposition.