Update tests for ICarDisplayProxy - getIGBPObject test will be skipped if a target device does not support HIDL. - showWindow and hideWindow tests are modified to remove their dependency on previous tests. Bug: 391505530 Test: atest VtsHalCarDisplayTargetTest Change-Id: I0a294c2a23d1943f1b00de4aa3fd2c18f5b34ac9