fix(lightning): tune scorer params

[pwltr]

Description

Improves Lightning route selection by tuning node-wide scorer fee params. These params have been used in nightly probing testing as the next variant. See comparison to current (stable) here.

Android counterpart: synonymdev/bitkit-android#1102

[greptile-apps]

Greptile Summary

Updates Lightning route-scoring parameters:

• Lowers the node-wide base penalty from 50,000 to 40,000 msat.
• Uses the configured/default probing-diversity penalty instead of overriding it with 60,000 msat.

Confidence Score: 5/5

The PR appears safe to merge, with no concrete correctness or security failures identified in the scorer parameter tuning.

The setup path continues to construct and apply the complete scoring parameter set, while the changed values align with the PR’s stated route-selection tuning.

Important Files Changed

Filename	Overview
Bitkit/Services/LightningService.swift	Adjusts two scorer fee parameters used when configuring LDK Node route selection; no actionable defect was identified.

_{Reviews (1): Last reviewed commit: "fix(lightning): tune scorer params" | Re-trigger Greptile}