Update remove_control_payload.dart

[SIRGPrice]

Android apk app randomly generates this error in logcat:

E [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: type 'Null' is not a subtype of type 'String'
#0 new List.from (dart:core-patch/array_patch.dart:30)
#1 new RemoveControlPayload.fromJson (package:flet/src/protocol/remove_control_payload.dart:7)
#2 appReducer (package:flet/src/reducers.dart:376)
#3 Store._createReduceAndNotify. (package:redux/src/store.dart:235)
#4 Store.dispatch (package:redux/src/store.dart:267)
#5 FletServer._onMessage (package:flet/src/flet_server.dart:265)
#6 FletTcpSocketServerProtocol._onMessage (package:flet/src/flet_server_protocol_tcp_socket.dart:125)
#7 FletTcpSocketServerProtocol.connect. (package:flet/src/flet_server_protocol_tcp_socket.dart:94)
#8 _RootZone.runUnaryGuarded (dart:async/zone.dart:1778)
#9 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:381)
#10 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:312)
#11 _SyncStreamControllerDispatch._sendData (dart:async/stream_controller.dart:798)
#12 _StreamController._add (dart:async/stream_controller.dart:663)
#13 _StreamController.add (dart:async/stream_controller.dart:618)
#14 _Socket._onData (dart:io-patch/socket_patch.dart:2904)
#15 _RootZone.runUnaryGuarded (dart:async/zone.dart:1778)
#16 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:381)
#17 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:312)
#18 _SyncStreamControllerDispatch._sendData (dart:async/stream_controller.dart:798)
#19 _StreamController._add (dart:async/stream_controller.dart:663)
#20 _StreamController.add (dart:async/stream_controller.dart:618)
#21 new _RawSocket. (dart:io-patch/socket_patch.dart:2323)
#22 _NativeSocket.issueReadEvent.issue (dart:io-patch/socket_patch.dart:1646)
#23 _microtaskLoop (dart:async/schedule_microtask.dart:40)
#24 _startMicrotaskLoop (dart:async/schedule_microtask.dart:49)

Description

Test Code

# Test code for the review of this PR

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist

• I signed the CLA.
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• New and existing tests pass locally with my changes
• I have made corresponding changes to the documentation (if applicable)

Screenshots

Additional details

Summary by Sourcery

Bug Fixes:

• Default ids to an empty list in RemoveControlPayload.fromJson when the JSON value is null to avoid casting errors

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