Improvement: Node Health Indicator Misleading in Certain Configurations

[jpl-btc]

The node health feature, while generally useful, can sometimes mislead users into thinking everything is working well, even if there are configuration issues. For example, a user with mixed public and private channels experienced "no route" issues, yet the node health indicator showed 100% health. This gave a false sense of everything being fine.

I do not suggest changes at this point, but I'm raising this issue to track similar occurrences as they come up. Once we have more examples and a better understanding, we can consider improvements to the logic to avoid false negatives. There is no urgency, as the feature has been helpful for most users, but this is worth addressing for a small subset of rare cases. 😊

[rolznz]

I am not sure this particular issue should be indicated in node health or a separate alert showed on the page. #58