sync multiple client functional test fails intermittently

[murali-shris]

Describe the bug

https://github.com/atsign-foundation/at_client_sdk/actions/runs/11007843917
sync_multiple_client_test.dart fails intermittently with the error

  INFO|2024-09-24 05:58:05.513521|SyncSystemTest|Server commit log: {public:signing_publickey@alice🛠: [0, +], @alice🛠:signing_privatekey@alice🛠: [1, +], public:pkaminstalled@alice🛠: [3, *], shared_key.bob🛠@alice🛠: [11, *], @bob🛠:shared_key@alice🛠: [12, *], public:location.wavi@alice🛠: [15, *], public:image.wavi@alice🛠: [19, *], public:city.wavi@alice🛠: [20, *], public:foo.at_lookup_race_test@alice🛠: [21, *], public:bar.at_lookup_race_test@alice🛠: [22, *], public:baz.at_lookup_race_test@alice🛠: [23, *], public:wavi-46050236.iphone.pkam.__pkams.__public_keys@alice🛠: [25, +], public:wavi-946541363.iphone.pkam.__pkams.__public_keys@alice🛠: [28, +], public:linkedin.wavi@alice🛠: [558, *], public:testkey.wavi@alice🛠: [565, *], public:fb_username-b4806309-d9e3-42c6-95bb-28e652a8992a@alice🛠: [574, *], public:test.wavi@alice🛠: [585, *], public:phone@alice🛠: [586, *], public:email@alice🛠: [587, *], public:location@alice🛠: [588, *], public:publickey@alice🛠: [590, *], phone-484848642.wavi@alice🛠: [595, *], country-484848642.wavi@alice🛠: [596, *], city-484848642.wavi@alice🛠: [597, -], location-484848642.wavi@alice🛠: [598, *]} 
  
  INFO|2024-09-24 05:58:05.514130|SyncSystemTest|mapEntry: MapEntry(phone-484848642.wavi@alice🛠: {commitId: 595, commitOp: CommitOp.UPDATE_ALL}) 
  
  INFO|2024-09-24 05:58:05.514231|SyncSystemTest|mapEntry: MapEntry(location-484848642.wavi@alice🛠: {commitId: 598, commitOp: CommitOp.UPDATE_ALL}) 
  
  INFO|2024-09-24 05:58:05.514296|SyncSystemTest|mapEntry: MapEntry(worknumber-484848642.wavi@alice🛠: {commitId: 599, commitOp: CommitOp.UPDATE_ALL}) 
  NoSuchMethodError: The method '[]' was called on null.
  Receiver: null
  Tried calling: [](0)
  dart:core                                   Object.noSuchMethod
  test/sync_multiple_client_test.dart 424:42  assertCommitEntries
  test/sync_multiple_client_test.dart 156:24  main.<fn>
✅ test/atclient_putText_test.dart: (setUpAll)

Issue seems to be a key missing in sync response from server (worknumber-484848642.wavi in the above failure)
Issue is not replicated in local run of functional tests

Steps to reproduce

Run github actions

Expected behavior

test should pass consistently

Screenshots

No response

Smartphones

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Were you using an atApplication when the bug was found?

No response

Additional context

No response

[murali-shris]

Issue seems to be in metrics_impl.dart on server code
atCommitLog!.getEntries(lastCommitIdReceived, regex: regex) returns max 25 entries(default limit)
If there are commits greater than 25, then the test fails.
I have fixed the issue by paginating till we retrieve all entries
atsign-foundation/at_server@d50f8f3