Rename device ID constants.

Updates DEFAULT_DEVICE_ID to DEVICE_ID_DEFAULT and INVALID_DEVICE_ID to
DEVICE_ID_INVALID.

Based on API feedback in b/261607264.

Test: atest
(VirtualDeviceTest|ContextTest|VirtualDeviceManagerServiceTest)
Bug: 261607264

Change-Id: I94c1360b88f252f4bce38f130ad05c17ddc33a15