fix: Fixed missing images #829

[kw-pr]

Description

Added setContainer in Slide/AbstractSlide::createDrawingShape().

Fixes #820 createDrawingShape stopped working in 1.1.0

See #820 (comment) for details.

Checklist:

• My CI is 🟢
• I have covered by unit tests my new code (check build/coverage for coverage report)
• I have updated the documentation to describe the changes
• I have updated the changelog

I think extra tests is not needed for a bugfix. There is no new code, not really.

[kw-pr]

@Progi1984 What do you think about this?
I noticed you merged the other PRs but not this. I know this is one is more complicated. :)
I already put a lot of effort into this and would appreciate your feedback.

[Progi1984]

@kw-pr I prefer this approach : kw-pr@6a549ba

[kw-pr]

@Progi1984 I think this didn't work correctly. It adds all shapes, but I encountered errors with some of them. In the end, I only wanted the File shape. I'm not sure which other shapes we could safely add here.

It feels excessive to incorporate this into ShapeCollection when it's only needed for a few specific shapes.

Anyway, if you think this is the best approach I will create a new PR.