qs: undo using block votes to fetch batches

[ibalajiarun]

Description

Basically, get_transactions is not cancellation safe, so it cannot be polled in a select statement.

[trunk-io]

⏱️ 35m total CI duration on this PR

Job	Cumulative Duration	Recent Runs
check-dynamic-deps	13m	🟩 🟩 🟩 🟩 🟩
test-target-determinator	10m	⬜ 🟩 🟩
rust-cargo-deny	7m	🟩 🟩 ⬜ 🟩 🟩
semgrep/ci	2m	🟩 🟩 🟩 🟩 🟩
general-lints	2m	🟩 🟩 ⬜ 🟩 🟩
file_change_determinator	53s	🟩 🟩 🟩 🟩 🟩
file_change_determinator	38s	🟩 🟩 🟩
permission-check	13s	🟩 🟩 🟩 🟩 🟩
permission-check	11s	🟩 🟩 🟩 🟩 🟩
permission-check	7s	🟩 🟩 🟩
determine-docker-build-metadata	6s	🟩 🟩 🟩

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[github-actions]

✅ Forge suite realistic_env_max_load success on 9521a0675da63cf727072b0e91dac79d3fbb4d80

two traffics test: inner traffic : committed: 14537.67 txn/s, submitted: 14544.61 txn/s, expired: 6.94 txn/s, latency: 2700.07 ms, (p50: 2700 ms, p70: 2700, p90: 3000 ms, p99: 3600 ms), latency samples: 5527540
two traffics test : committed: 99.96 txn/s, latency: 1504.77 ms, (p50: 1400 ms, p70: 1500, p90: 1600 ms, p99: 4200 ms), latency samples: 1780
Latency breakdown for phase 0: ["MempoolToBlockCreation: max: 1.527, avg: 1.477", "ConsensusProposalToOrdered: max: 0.297, avg: 0.290", "ConsensusOrderedToCommit: max: 0.429, avg: 0.402", "ConsensusProposalToCommit: max: 0.727, avg: 0.692"]
Max non-epoch-change gap was: 0 rounds at version 0 (avg 0.00) [limit 4], 0.76s no progress at version 3328726 (avg 0.20s) [limit 15].
Max epoch-change gap was: 0 rounds at version 0 (avg 0.00) [limit 4], 0.62s no progress at version 2391941 (avg 0.62s) [limit 16].
Test Ok

• Grafana dashboard
• Humio Logs
• Axiom Logs
• Validator CPU Profile
• Fullnode CPU Profile
• Test runner output
• Test run is land-blocking