Fix "Camera: Address ultrawide test for foldable camera" in instant mode

https://android-review.googlesource.com/2284953 added a check
for foldable devices that isn't available to the instant app
mode. Just like other tests in the class relying on the check,
this CL adds @AppFullMode attribute to skip the case in the
instant app CTS mode.

Test: ExtendedCameraCharacteristicsTest#testCameraPerfClassCharacteristics
Bug: 258996678
Change-Id: I45d43116cda0f98c63e13d9caefb4e235f620f5e
Merged-In: I62e2d1d203f830e484657e232ae3d2f9b50b22b9