Don't try to lookup presence based on missing transceiver Id
Don't try to lookup presence based on missing transceiver Id

Summary:
For FAB ports there are no transceiver to check presence on,
so don't try to look up based on them.

Reviewed By: boryas

Differential Revision: D5502039

fbshipit-source-id: b7139749ecda07e0b23f8a0883ac40bdb7a3cec4

peterlei/fboss,peterlei/fboss,peterlei/fboss,peterlei/fboss