go/txsource/queries: Wait for indexed blocks before GetBlockByHash

[kostko]

No description provided.

[codecov]

Codecov Report

Merging #2814 into master will increase coverage by 0.72%.
The diff coverage is 60.00%.

@@            Coverage Diff             @@
##           master    #2814      +/-   ##
==========================================
+ Coverage   61.27%   62.00%   +0.72%     
==========================================
  Files         386      386              
  Lines       37247    37264      +17     
==========================================
+ Hits        22824    23105     +281     
+ Misses      11439    11103     -336     
- Partials     2984     3056      +72     

Impacted Files	Coverage Δ
.../oasis-node/cmd/debug/txsource/workload/queries.go	53.51% <60.00%> (+52.54%)	⬆️
go/runtime/committee/nodes.go	80.64% <0.00%> (-2.16%)	⬇️
go/worker/common/p2p/p2p.go	62.61% <0.00%> (-1.81%)	⬇️
go/worker/storage/committee/checkpointer.go	66.37% <0.00%> (-1.77%)	⬇️
go/runtime/client/watcher.go	73.84% <0.00%> (-1.54%)	⬇️
go/runtime/client/client.go	67.52% <0.00%> (-0.74%)	⬇️
go/roothash/tests/tester.go	95.54% <0.00%> (-0.64%)	⬇️
go/storage/mkvs/db/badger/badger.go	52.91% <0.00%> (+0.44%)	⬆️
go/worker/keymanager/worker.go	60.00% <0.00%> (+0.59%)	⬆️
go/common/grpc/grpc.go	78.83% <0.00%> (+1.24%)	⬆️
... and 15 more

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