BleScanner: SetScanParameters: Allow passing scan type from btif

GD API actually has the scan type argument but it's always passed a
0x01 (Active). This patch wires the API to btif thus allows Floss to
configure the parameter. In JNI, still hard-code it as 0x01.

Bug: 323979740
Tag: #floss
Test: mmm packages/modules/Bluetooth
Test: Manual test on Cherry/Tomato, no behavior change
Flag: EXEMPT, no behavior change on Android; Floss-only changes
Change-Id: I137ea5fed075e80fda7d5b0383b03001ac414852