Add ble_scan_setting_does_not_disconnect_if_bt_on

Bug: 315241296
Bug: 379166793
Test: m .
Flag: com.android.bluetooth.flags.ble_scan_setting_does_not_disconnect_if_bt_on
(cherry picked from https://android-review.googlesource.com/q/commit:ed6bf8744ac1dc0b06a9b11d268f4915f2ad84a7)
Merged-In: Ia2da91add0f2ccc2a28e6e4dd3a17fb1c67e4dec
Change-Id: Ia2da91add0f2ccc2a28e6e4dd3a17fb1c67e4dec