[FEATURE] Transfer query parameters in preview

The workspace preview does not transfer query parameters to the
iframes used for preview. This prevents extensions passing custom
parameters from functioning properly.

Change-Id: If25f24f7d7252333c3d3a36419d81d7f611408ea
Resolves: #31996
Releases: 6.2
Reviewed-on: https://review.typo3.org/21112
Reviewed-by: Sascha Egerer
Tested-by: Sascha Egerer
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn