Connection view: update ENSRainbow section values

[tk-o]

Depends on:

• Update ENSIndexer version info to fully cover ENSRainbow version info #1166

Currently, the section presents data from EnsRainbowClientLabelSet, which is based on ENSIndexer application settings. However, it should use a dynamic EnsRainbowServerLabelSet value fetched from ENSRainbow service.