ibaker 320a45f7d6 Session tests: Log when no controllers are connected
While debugging various session tests failure I found that sometimes
this list was empty (e.g. when a controller had failed to connect, or
hadn't finished connecting yet) - resulting in these methods being
silent no-ops. I think it's basically never expected for there to be no
controllers connected when these methods are invoked, so this logs at
ERROR level to give a clue of what happened when looking at the test
logcat.

PiperOrigin-RevId: 564750969
2023-09-12 09:52:21 -07:00
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