Wallet-config utils unit tests

[Lemonexe]

Followup to #13839

suite-common/wallet-config utils.ts contains a lot of functions, some of which are mission-critical, but no unit test coverage.

• setup jest in wallet-config
• write tests for:
  • getMainnets
  • getTestnets
  • normalizeNetworkAccounts
  • isAccountOfNetwork
  • (other fns are quite trivial)

Additionally, the some logic could be extracted from discoveryThunks/calculateProgress, so it can also be covered by tests.