Make the conflict dialog larger

## Feature request

**Which Nextcloud Version are you currently using:** (see administration page)

**Is your feature request related to a problem? Please describe.**
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

The conflict dialog is too small at start to show anything usefull

Make the conflict dialog larger (taller) at start.

It can always be changed manually but it is poor ui-design to hide essential information from the user.