NIU Actions: Do not send image URI when sending error code

In the case of a permissions denial, we do not send a screenshot in the NIU Actions Intent. Previously, we sent a fake URI to fit with existing recipient Intent filters, but the recipients have been updated to no longer require this.

Bug: 186780965
Test: m -j RunLauncherGoGoogleRoboTests
Change-Id: I7cf92a03946e1663150f963fcea7f6b92833da68