Fix crash reported in bug 342222

For shapes that are created in the document a KoShapeController is set. However
when loading a shape this is not set as it is not available in the factory. This
results in a crash when pasting as there the KoShapeController is needed.
Therefore create a KoShapeController which can be set on text shapes during
loading. This is done the same in kopageapp and words.

BUG: 342222
REVIEW: 121733