PoS bonds query doesn't find delegation unbonds when validator is not specified

[tzemanovic]

To reproduce using e2e tests:

Run:

RUST_BACKTRACE=1 NAMADA_E2E_KEEP_TEMP=true NAMADA_E2E_DEBUG=true cargo +nightly-2022-11-03 test e2e::ledger_tests::pos_bonds -Z unstable-options -- --test-threads=1 --nocapture

Shut it down after unbonds are applied.

Resume the node and query bonds:

# This works fine and shows all the bonds and unbonds
namadac bonds --owner Bertha --validator validator-0 --ledger-address 127.0.0.1:27657

# This doesn't find the unbonds
namadac bonds --owner Bertha --ledger-address 127.0.0.1:27657

Thanks @Fraccaman for finding the issue!