Use a display ID that's really invalid.

When WMS for WmTests is set up, it gets the display info from real
DisplayManagerService, which may not only have 1 display when the test
is run. Therefore use Integer#MAX_VALUE to be safe.

Bug: 145836235
Test: atest ActivityRecordTests#testCanBeLaunchedOnDisplay
Change-Id: Ib809f895a86eafe1c1f5bbc511b1d4f0dec31d82