feat(explorer): list services in the console sidebar

### Description

The console sidebar has fixed entries. Once #409 merges, the payer's services come from `AccountOperator`, and the sidebar should reflect them: one entry per operator the payer has an approval or rail with, linking to `/console/services/[operator]`, plus an Add service entry that opens the #370 flow.

Entry label uses the on-chain name from #233 with the short address as fallback. Beam is not listed (dropped in PM review).

### Expected behavior

A payer with Warm Storage and one other operator sees two service entries and Add service. A wallet with no account sees only Add service. Active route is highlighted.

### Additional context

Parent: #460. Depends on #409 (data) and #233 (labels, address fallback is fine to ship without it). The IA wireframe puts "Your services" rows on the account overview; #409 already does that. This issue is the sidebar only.

Merges alone: sidebar falls back to today's fixed entries when `AccountOperator` returns nothing, and to the short address when #233 is not in.

Start at the console sidebar entry point and trace how the current fixed entries are built. Check how AccountOperator data from #409 and the #233 name fallback can reach the sidebar, then verify the service routes, Add service entry, active-route highlighting, and fallbacks for empty data or missing labels.

Written by the indexing model from the issue text.