Modal blur/opacity is different between "connect" and "configure"

[taylordowns2000]

The configure connection blur:

The change adaptor blur:

The modal blur is relatively new. In this issue, please ensure it's the same everywhere it's used.

[lmac-1]

@taylordowns2000 which one do you prefer? Or no preference?

[taylordowns2000]

I think @elias-ba has already done this. Elias, can you confirm and move this to in progress so Lucy doesn't double up? Thanks!

[josephjclark]

@elias-ba has addressed this in #4197. We'll keep the change there or splice it out