Description

Add images by editing Word in OneDrive and download Word files locally
When loaded with PhpOffice\PhpWord\IOFactory::load
Fixed a bug that caused PhpOffice\PhpWord\Exception\InvalidImageException.

If you unzip a normal Word file with zip
/docProps
/word
/_rels
Image files are in the directory
It is saved as /word/media/xxx.png.

However, if it is a file with images added with OneDrive
/docProps
/media
/word
/_rels
It is stored in the media directory of the directory called
In getRels of PhpOffice\PhpWord\Reader\Word2007 Since it is assumed that the image exists in the /word/mediadirectory, The image in the/media` directory could not be read and an error occurred.

for that reason,
If a directory has a "/" at the beginning, it has been modified to refer to that directory.

Fixes #2245

Checklist:

• I have run composer run-script check --timeout=0 and no errors were reported

An error was reported where it had nothing to do with the fix.

Checked all files in 0.680 seconds, 12.000 MB memory used
> phpcs --report-width=200 --report-summary --report-full samples/ src/ tests/ --ignore=src/PhpWord/Shared/PCLZip --standard=PSR2 -n
> phpmd src/,tests/ text ./phpmd.xml.dist --exclude pclzip.lib.php
/path/to/PHPWord/src/PhpWord/Element/TOC.php:27  CamelCasePropertyName  The property $TOCStyle is not named in camelCase.

• The new code is covered by unit tests (check build/coverage for coverage report)
• I have updated the documentation to describe the changes
  There was no description because it was a minor bug fix.