BumbleBluetoothTests: Add non-connectable scannable LeScanningTest

Add startBleScan_withNonConnectableScannablePublicAdvertisement
test, which tests scanning of a scannable non-connectable
advertisement with manufacturing data in the scan response and
verifies that the scan result's isConnectable() field returns
false.

Bug: 312883465
Flag: TEST_ONLY
Test: atest BumbleBluetoothTests:android.bluetooth.LeScanningTest
Change-Id: Iaa1ac88dc578b5d4a2a7be5bd600986077198eec