Backport to 7.4: add retry limit to startMoveKeys to prevent infinite loops (#13176)

[saintstack]

Add START_MOVE_KEYS_MAX_RETRIES knob (default 50, BUGGIFY=10) and throw start_move_keys_too_many_retries when exceeded. Wire the new error into DDRelocationQueue (same light-weight re-queue handler as finish_move_keys_too_many_retries and move_to_removed_server) and normalDDQueueErrors so DD does not restart. Also propagate actor_cancelled before the retry limit check in startMoveKeys.

20260724-003619-stack-backport-7.4-eac563f902694355 compressed=True data_size=41563174 duration=3238562 ended=100000 fail=5 fail_fast=10 max_runs=100000 pass=99995 priority=100 remaining=0 runtime=0:31:27 sanity=False started=100000 stopped=20260724-010746 submitted=20260724-003619 timeout=5400 username=stack-backport-7.4

The 5 failures are all 'RandomSeed="1520625388" SourceVersion="ac41ec01f6c2b74a6c1432bb75f874a9c3ab2dd2" Time="1784853672" BuggifyEnabled="0" DeterminismCheck="0" FaultInjectionEnabled="1" TestFile="tests/fast/MinimumThroughput.toml"'. I'll fix in a different PR. The failures are not related to here.

(They are fixed over in #13783)

[saintstack]

RandomSeed="1264945544" SourceVersion="27f7192f47c366c7f668f79f1de23e05fecd8959" Time="1786731900" BuggifyEnabled="1" DeterminismCheck="0" OldBinary="fdbserver-7.4.5" FaultInjectionEnabled="1" TestFile="tests/restarting/from_7.3.0/UpgradeAndBackupRestore-1.toml"

RandomSeed="1264945545" SourceVersion="1d9b495d6ba7f4390bba1bb4d51c38f4ed4a2055" Time="1786731930" BuggifyEnabled="1" DeterminismCheck="0" FaultInjectionEnabled="1" TestFile="tests/restarting/from_7.3.0/UpgradeAndBackupRestore-2.toml"

[saintstack]

20260814-231424-stack_74-839e90b192b66d53 compressed=True data_size=41591418 duration=3488173 ended=100000 fail=1 fail_fast=10 max_runs=100000 pass=99999 priority=100 remaining=0 runtime=0:32:13 sanity=False started=100000 stopped=20260814-234637 submitted=20260814-231424 timeout=5400 username=stack_74

RandomSeed="640037351" SourceVersion="52c07a3b28e2d59e276c2c72ef98dc23a969b0bb" Time="1786749351" BuggifyEnabled="1" DeterminismCheck="0" FaultInjectionEnabled="1" TestFile="tests/fast/DataLossRecovery.toml"

[foundationdb-ci]

Result of foundationdb-pr-clang on Linux RHEL 9

• Commit ID: 52c07a3
• Duration 0:43:02
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Log terminal output (available for 30 days)
• Build Workspace zip file of the working directory (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr-clang-arm on Linux RHEL 9

• Commit ID: 52c07a3
• Duration 0:45:43
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Log terminal output (available for 30 days)
• Build Workspace zip file of the working directory (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr on Linux RHEL 9

• Commit ID: 52c07a3
• Duration 0:50:31
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Log terminal output (available for 30 days)
• Build Workspace zip file of the working directory (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr-cluster-tests on Linux RHEL 9

• Commit ID: 52c07a3
• Duration 1:28:51
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Log terminal output (available for 30 days)
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• Cluster Test Logs zip file of the test logs (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr-macos-m1 on macOS 14.x

• Commit ID: 52c07a3
• Duration 2:00:16
• Result: ✅ SUCCEEDED
• Error: N/A
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[foundationdb-ci]

Result of foundationdb-pr-macos on macOS 14.x

• Commit ID: 52c07a3
• Duration 4:23:55
• Result: ✅ SUCCEEDED
• Error: N/A
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