`_pyio.TextIOBase.read` is missing a `size` arg

[ShaharNaveh]

Bug report

Bug description:

IOBase:

cpython/Lib/_pyio.py

Line 513 in a064b32

def readline(self, size=-1):

TextIOBase:

cpython/Lib/_pyio.py

Line 1931 in a064b32

def readline(self):

---

This pattern seems to be missing only for readline AFAICT.
for truncate (which is also "unsupported" for TextIOBase) it's preserved:

IOBase:

cpython/Lib/_pyio.py

Line 370 in a064b32

def truncate(self, pos=None):

TextIOBase:

cpython/Lib/_pyio.py

Line 1927 in a064b32

def truncate(self, pos=None):

(the same for write and others).

My proposed fix should be adding a size argument to readline with a default value of -1

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux