fix(lightning): use actual probe result

[pwltr]

Description

Before this change, the probing flow always returned success for any sent probe. Now it uses the paymentIds from the returned probe handles, waits for matching .probeSuccessful / .probeFailed events, and updates the UI to use the actual result. Also adds send probes via keysend.

Details

• LightningService.sendProbe returns dispatched probe paymentIds (ProbeDispatch).
• WalletViewModel.waitForProbeOutcome matches on those IDs, uses a small in-memory cache so events aren’t missed between dispatch and registering the listener, clears cache on node stop / wipe.
• Multi-path probes: resolve on first success, or after all tracked probes fail.

Needs synonymdev/ldk-node#77

Screenshot / Video

Simulator.Screen.Recording.-.iPhone.17.-.2026-04-08.at.18.48.21.mov

[piotr-iohk]

LGTM.
(Useful follow-up would be to support LNURL-pay / Lightning Address in the probing tool.)

[ovitrif]

LGTM

Also tested send to:

• WoS ✅
• Phoenix ✅

Will do the rest of the testing together with Android, for the new scores snapshot.