Closes #3116.

---------

Co-authored-by: m32 <grzegorz.makarewicz@gmail.com>

When fixing the inline image extraction in #3002, the fallback behavior
would break accidentally by leaving the stream before the EI marker.
We never saw this due to the tests somehow being not strict enough, thus
leading to the error

> b'EI' operator met whereas not expected, please share usecase with pypdf dev team

Otherwise, building the package on local systems leads to sdists being 408 MB instead of 4.8 MB.

Relates to #3115.

Unnecessary for dict modification.

PLW0602: Using a global but no assignment is done.

Closes #3107.

…3156)

…3157)

Closes #3151.

Closes #3153.

Closes #3032.

Closes #2886.

## What's new

### Bug Fixes (BUG)
- Use the correct name StandardEncoding for the predefined cmap (#3156) by @stefan6419846
- Handle inline images containing `EI ` sequences (#3152) by @stefan6419846
- Fix check box value which should be name object (#3124) by @stefan6419846
- Fix stream position on inline image fallback extraction (#3120) by @stefan6419846
- Fix object count for incremental writer (#3117) by @m32

### Robustness (ROB)
- Avoid index errors on empty lines in xref table (#3162) by @stefan6419846
- Improve handling of LZW decoder table overflow (#3159) by @stefan6419846
- Ignore non-numbers for width when building font width map (#3158) by @stefan6419846
- Avoid negative seek values when reading partially broken files (#3157) by @stefan6419846

### Documentation (DOC)
- Fixed PageObject.images example usage for replacing image (#3149) by @jutoth

[Full Changelog](5.3.0...5.3.1)