bta: Only call get_acl_data_size_ble for LE

Pass 0xFFFF (max uint16_t) to GAP_ConnOpen, which will call
get_acl_data_size_ble() to correct the value, but only when the
connection type is LE.

Bug: 77495521
Bug: 76192234
Test: Start Bluetooth with a BT 3.0 chip (or a simulated one)
Change-Id: If46ea249081fc058faf09bcb5149f21d8baf7aa7