Don't start peer authentication when peer device already started it. am:...

Don't start peer authentication when peer device already started it. am: fc5f8271 am: 7167eed1 am: 9ef229b7 am: 5072ec57

Original change: https://android-review.googlesource.com/c/platform/system/bt/+/1832934

Change-Id: Ic8034969ff418662cb38dc586e79bff9c4a0b453