Fix dialog size issue on successful closure

[mkevins]

For some reason, the Compose dialog does not change it's height after recomposition. I believe this is related with a known issue: https://issuetracker.google.com/issues/221643630. This task is to investigate this issue, and potential workarounds until it is resolved upstream.

One possible work-around worth a quick exploration is to set usePlatformDefaultWidth to false in the DialogProperties. Though the issue is related with height, this seems to fix the stale height issue. But, this means we must also take on the responsibility of defining a width (instead of relying on the platform default).