Deepfreeze essential parts of the encodings module. ### Description

This is a split off from #3582.

Deepfreeze essential parts of encodings module (encodings.\__init__, encodings.utf_8, and encodings.aliases), which is required during the Python bootstrap.

from pytest_pyodide import run_in_pyodide


@run_in_pyodide(packages=["numpy", "imageio"])
def test_imageio(selenium_standalone):
    import imageio
    import numpy as np

    filename = "/tmp/foo.tif"
    image_in = np.random.randint(0, 65535, size=(100, 36), dtype=np.uint16)
    imageio.imwrite(filename, image_in)
    image_out = imageio.imread(filename)
    assert image_out.shape == (100, 36)
    np.testing.assert_equal(image_in, image_out)


@run_in_pyodide(packages=["numpy", "imageio"])
def test_jpg(selenium):
    import imageio
    import numpy as np

    img = np.zeros((5, 5), dtype=np.uint8)
    imageio.imsave("img.jpg", img)
    assert (imageio.imread("img.jpg") == img).all()

from pytest_pyodide import run_in_pyodide


@run_in_pyodide(packages=["numpy", "imageio"])
def test_imageio(selenium_standalone):
    import imageio
    import numpy as np

    filename = "/tmp/foo.tif"
    image_in = np.random.randint(0, 65535, size=(100, 36), dtype=np.uint16)
    imageio.imwrite(filename, image_in)
    image_out = imageio.imread(filename)
    assert image_out.shape == (100, 36)
    np.testing.assert_equal(image_in, image_out)


@run_in_pyodide(packages=["numpy", "imageio"])
def test_jpg(selenium):
    import imageio
    import numpy as np

    img = np.zeros((5, 5), dtype=np.uint8)
    imageio.imsave("img.jpg", img)
    assert (imageio.imread("img.jpg") == img).all()
