Set BT OPP whitelist intent to foreground priority

If the device is in busy state, the whitelist intent may be delayed.
In that case, Bluetooth cannot know if the OPP is triggered by NFC.
Then user confirmation is required before file transfer.

Test: Receive a file via AndroidBeam
Bug: 117909547
Change-Id: I05a51e0f3931dd93cbb5db0b2fdda1f36d854ec5
2 files changed