[fa] add back migration_flag for exchanges

[lightmark]

partially revert #15269
to ban deposit into exchange account in FA format

will revert once we start migration.

[trunk-io]

⏱️ 48m total CI duration on this PR

Job	Cumulative Duration	Recent Runs
execution-performance / single-node-performance	22m	🟩
rust-doc-tests	5m	🟩
test-target-determinator	5m	🟩
check-dynamic-deps	5m	🟩 🟩
execution-performance / test-target-determinator	5m	🟩
rust-cargo-deny	3m	🟩 🟩
fetch-last-released-docker-image-tag	2m	🟩
general-lints	54s	🟩 🟩
semgrep/ci	42s	🟩 🟩
file_change_determinator	20s	🟩 🟩
file_change_determinator	12s	🟩
permission-check	5s	🟩 🟩
permission-check	4s	🟩
permission-check	4s	🟩 🟩
determine-docker-build-metadata	1s	🟩

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[github-actions]

✅ Forge suite compat success on f69dc31b0f674662b6bfa941dc7eee9ce9035e29 ==> c65749eabfdbdcd721fb94c30e8e094cd657a390

Compatibility test results for f69dc31b0f674662b6bfa941dc7eee9ce9035e29 ==> c65749eabfdbdcd721fb94c30e8e094cd657a390 (PR)
1. Check liveness of validators at old version: f69dc31b0f674662b6bfa941dc7eee9ce9035e29
compatibility::simple-validator-upgrade::liveness-check : committed: 15508.56 txn/s, latency: 2042.74 ms, (p50: 2000 ms, p70: 2100, p90: 2700 ms, p99: 3800 ms), latency samples: 502580
2. Upgrading first Validator to new version: c65749eabfdbdcd721fb94c30e8e094cd657a390
compatibility::simple-validator-upgrade::single-validator-upgrading : committed: 5032.75 txn/s, latency: 6120.03 ms, (p50: 6900 ms, p70: 7400, p90: 7600 ms, p99: 7700 ms), latency samples: 99760
compatibility::simple-validator-upgrade::single-validator-upgrade : committed: 4947.55 txn/s, latency: 6973.37 ms, (p50: 7600 ms, p70: 7700, p90: 8000 ms, p99: 8100 ms), latency samples: 175100
3. Upgrading rest of first batch to new version: c65749eabfdbdcd721fb94c30e8e094cd657a390
compatibility::simple-validator-upgrade::half-validator-upgrading : committed: 4264.82 txn/s, latency: 7280.57 ms, (p50: 8000 ms, p70: 8600, p90: 8900 ms, p99: 9000 ms), latency samples: 91060
compatibility::simple-validator-upgrade::half-validator-upgrade : committed: 4385.93 txn/s, latency: 7755.60 ms, (p50: 8600 ms, p70: 8700, p90: 8800 ms, p99: 9000 ms), latency samples: 155060
4. upgrading second batch to new version: c65749eabfdbdcd721fb94c30e8e094cd657a390
compatibility::simple-validator-upgrade::rest-validator-upgrading : committed: 8816.00 txn/s, latency: 3420.34 ms, (p50: 3900 ms, p70: 4100, p90: 4400 ms, p99: 4600 ms), latency samples: 156560
compatibility::simple-validator-upgrade::rest-validator-upgrade : committed: 8574.37 txn/s, latency: 3943.50 ms, (p50: 4100 ms, p70: 4400, p90: 4600 ms, p99: 5300 ms), latency samples: 289160
5. check swarm health
Compatibility test for f69dc31b0f674662b6bfa941dc7eee9ce9035e29 ==> c65749eabfdbdcd721fb94c30e8e094cd657a390 passed
Test Ok

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

[github-actions]

✅ Forge suite realistic_env_max_load success on c65749eabfdbdcd721fb94c30e8e094cd657a390

two traffics test: inner traffic : committed: 14845.57 txn/s, latency: 2677.00 ms, (p50: 2700 ms, p70: 2700, p90: 2900 ms, p99: 3300 ms), latency samples: 5644600
two traffics test : committed: 99.98 txn/s, latency: 1321.35 ms, (p50: 1300 ms, p70: 1300, p90: 1400 ms, p99: 1800 ms), latency samples: 1740
Latency breakdown for phase 0: ["MempoolToBlockCreation: max: 1.557, avg: 1.519", "ConsensusProposalToOrdered: max: 0.294, avg: 0.289", "ConsensusOrderedToCommit: max: 0.305, avg: 0.294", "ConsensusProposalToCommit: max: 0.593, avg: 0.583"]
Max non-epoch-change gap was: 0 rounds at version 0 (avg 0.00) [limit 4], 0.64s no progress at version 37305 (avg 0.19s) [limit 15].
Max epoch-change gap was: 0 rounds at version 0 (avg 0.00) [limit 4], 0.52s no progress at version 2668009 (avg 0.52s) [limit 16].
Test Ok

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