leaudio: Fix reconnection issue

In some cases, BT scan might disconnect device internally but still
might be interested in the reconnection.
This patch helps to do that.
Observed many times when working o Targeted Announcements support.

Bug: 248340126
Test: atest BluetoothInstrumentationTests
Tag: #feature
Change-Id: I164899f41231f6fb16b3986de3a1b0b6c0194176