Use TextIOWrapper.detach() instead of NoCloseStream

[jdufresne]

Usage and this pattern is discussed in Python bug: https://bugs.python.org/issue21363

detach() docs

[jdufresne]

Rebased on latest mater.

[codecov]

Codecov Report

Merging #2214 into master will increase coverage by 0.06%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #2214      +/-   ##
==========================================
+ Coverage   83.21%   83.28%   +0.06%     
==========================================
  Files         169      168       -1     
  Lines       23507    22618     -889     
  Branches     2795     2795              
==========================================
- Hits        19562    18838     -724     
+ Misses       3945     3780     -165

Impacted Files	Coverage Δ
src/PIL/EpsImagePlugin.py	89.22% <100%> (-0.14%)	⬇️
src/libImaging/File.c	76% <0%> (-8.62%)	⬇️
src/PIL/PngImagePlugin.py	89.97% <0%> (-0.21%)	⬇️
src/_webp.c	80.62% <0%> (-0.13%)	⬇️
src/PIL/JpegImagePlugin.py	91.41% <0%> (-0.11%)	⬇️
src/libImaging/Unpack.c	96.67% <0%> (-0.07%)	⬇️
src/PIL/Image.py	91.09% <0%> (-0.02%)	⬇️
src/PIL/WalImageFile.py	0% <0%> (ø)	⬆️
src/PIL/XpmImagePlugin.py	89.47% <0%> (ø)	⬆️
src/PIL/WmfImagePlugin.py	95.31% <0%> (ø)	⬆️
... and 36 more

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