Rescue ducasse example cleanup

[tinchodias]

@Ducasse I recovered commits from your branch: /~https://github.com/pharo-graphics/Bloc/tree/2023-10--02-lessExamples

I had to resolve conflicts. And I avoided the commit on animations because I have changes on it.

If you agree, you merge this and delete the original branch

[tinchodias]

:-/ my conflict-solving changes introduced a compilation error

*** Warning: Warning: The following definitions had errors while loading.  Press Proceed to try to load them again (they may work on a second pass):
  BlGeometryVisualAndLayoutBoundsTestOld

Syntax Error on line 4: 'End of statement expected'
===================================================
01: testAlignedIcon
02: 
03: 	| anIconElement aLabelElement aContainerElement |
04: 	anIconElement := self testEmptyIconElement geometry:
                  _^_
05: 		                 self testTrianglePolygon.
06: 	aLabelElement := self testTextElementWithRunText.
07: 	aContainerElement := self testIconAndTextContainer.
08: 	aContainerElement addChildren: {
09: 			anIconElement.
10: 			aLabelElement }.
11: 	^ aContainerElement
CodeError:RBSyntaxErrorNotice UndefinedObject>>#DoIt 84:End of statement expected->testAlignedIcon

[Ducasse]

Tx martin!

[Ducasse]

This is strange I do not get why we would have a syntax error