[Bug]: Deep link handling for unified invoice

[pwltr]

It's not possible to pay via Lightning when using a unified invoice per deep link. Expected behaviour is the send flow opening with the "Node Connecting" screen, then forwarding to the "Review & Send" screen with Lightning selected. And also the QuickPay flow should work.

1. Have active wallet with spending balance
2. Pass a deep link to the emulator like

adb shell am start -W -a android.intent.action.VIEW -d "bitcoin:bcrt1q6ykx7mmgwe7jm46z66yzd0kmgl473d7krnu02r?amount=0.000001&lightning=LNBCRT1U1P5KJ46FDQQNP4QDRM0Y4AT84E48QVDN8CSWVE204SF6FFRR3W3AK904GE3JSEGLP4GPP5EHDZH2S0J9UZ7Q9J82FZXUT634YGF6NVFVGJY654D8UT49EJFH8SSP5Q9D9W26NZSMXL0WAUXNWXTJKSK8J7CMVEZPFF4NHU3RF8223J6US9QYYSGQCQPCXQRRSSRZJQ29GJY9SQJRRP48TZ7HJ2E5VM4L2DUKC4CSF2MN6QM32U3HTED5LEAPYQQQQQQQF95QQQQLGQQQQQQGQ2QHN32TEH23R68TF4EUVJ2T2F6KQSW6VJ009PRL6CVF6UZNJSQG6L8RWGXA8V2TUK3V3ZNHTMHK8L4WDKUTJ4F9T7TXN"

3. App opens with send flow, but only onchain payment is offered

Screen.Recording.2026-01-15.at.22.28.50.mov