floss: Event filter should not auto accept connections

When using the classic event filter during suspend, we should accept
connection requests but not auto-accept connections (that causes the
stack to crash). Similarly, we can just clear the event filter on
resume.

Bug: 253481253
Tag: #floss
Test: ChromeOS Autotest (sr_peer_wake_classic_hid and
      sr_reconnect_classic_hid)
Change-Id: I6775d9536d1668ac246648924f80608f8169e47c