Send on closed channel in subscription

[pdyraga]

23:28:29.436  INFO keep-entry: [member:2] submitting relay entry [0x14ee9abbe50a50706e84b315095a74fcad4ac0bcb9e2f2226ec17b3e08d51afc135c61f0c22ed57361d7ca211e3fa27ac8660cd71449a2deaa565d40b228df06] on behalf of group [0x2f9c3228ffa406d8c625423592d8e79f616a89a34panic: send on closed channel

goroutine 86347 [running]:
github.com/keep-network/keep-core/pkg/beacon/relay/entry.(*relayEntrySubmitter).submitRelayEntry.func1(0xc0033011d8)
	/Users/piotr/go/src/github.com/keep-network/keep-core/pkg/beacon/relay/entry/submission.go:42 +0x36
github.com/keep-network/keep-core/pkg/chain/ethereum.(*ethereumChain).OnRelayEntrySubmitted.func1(0x4f8)
	/Users/piotr/go/src/github.com/keep-network/keep-core/pkg/chain/ethereum/ethereum.go:255 +0x51
github.com/keep-network/keep-core/pkg/chain/gen/contract.(*KeepRandomBeaconOperator).subscribeRelayEntrySubmitted.func1(0xc000b300c0, 0xc0023532a8, 0xc000876b80, 0x4e25560, 0xc001e5ffc0, 0xc0026757a0)
	/Users/piotr/go/src/github.com/keep-network/keep-core/pkg/chain/gen/contract/KeepRandomBeaconOperator.go:2702 +0x133
created by github.com/keep-network/keep-core/pkg/chain/gen/contract.(*KeepRandomBeaconOperator).subscribeRelayEntrySubmitted
	/Users/piotr/go/src/github.com/keep-network/keep-core/pkg/chain/gen/contract/KeepRandomBeaconOperator.go:2692 +0x20b

[nkuba]

Happened in CI job execution.

=== Failed
=== FAIL: pkg/beacon/relay/gjkr TestExecute_DQ_member2_notRevealsDisqualifiedQualMemberKey_phase11 (89.14s)
=== PAUSE TestExecute_DQ_member2_notRevealsDisqualifiedQualMemberKey_phase11
=== CONT  TestExecute_DQ_member2_notRevealsDisqualifiedQualMemberKey_phase11
failed with: [[member:2] DKG result publication process failed [failed to initiate new state [could not submit result with [1] signatures for honest threshold [3]]]]
panic: send on closed channel

goroutine 15796 [running]:
github.com/keep-network/keep-core/pkg/beacon/relay/dkg/result.(*SubmittingMember).SubmitDKGResult.func1(0xc0002e63f0)
	/go/src/github.com/keep-network/keep-core/pkg/beacon/relay/dkg/result/submission.go:76 +0x3a
github.com/keep-network/keep-core/pkg/chain/local.(*localChain).SubmitDKGResult.func1(0xc0002e63f0, 0xc00049b2c0, 0xc0002e63f0)
	/go/src/github.com/keep-network/keep-core/pkg/chain/local/local.go:402 +0x30
created by github.com/keep-network/keep-core/pkg/chain/local.(*localChain).SubmitDKGResult
	/go/src/github.com/keep-network/keep-core/pkg/chain/local/local.go:401 +0x3b5
FAIL	github.com/keep-network/keep-core/pkg/beacon/relay/gjkr	89.136s

[nkuba]

Happened again in https://circleci.com/gh/keep-network/keep-core/43929

=== Failed
=== FAIL: pkg/beacon/relay/gjkr TestExecute_DQ_members25_revealWrongPrivateKey_phase9 (171.68s)
=== PAUSE TestExecute_DQ_members25_revealWrongPrivateKey_phase9
=== CONT  TestExecute_DQ_members25_revealWrongPrivateKey_phase9
failed with: [[member:1] DKG result publication process failed [failed to initiate new state [could not submit result with [1] signatures for honest threshold [3]]]]
failed with: [[member:4] DKG result publication process failed [failed to initiate new state [could not submit result with [1] signatures for honest threshold [3]]]]
failed with: [[member:5] DKG result publication process failed [failed to initiate new state [could not submit result with [1] signatures for honest threshold [4]]]]
panic: send on closed channel

goroutine 31646 [running]:
github.com/keep-network/keep-core/pkg/beacon/relay/dkg/result.(*SubmittingMember).SubmitDKGResult.func1(0xc00061c5a0)
    /go/src/github.com/keep-network/keep-core/pkg/beacon/relay/dkg/result/submission.go:76 +0x3a
github.com/keep-network/keep-core/pkg/chain/local.(*localChain).SubmitDKGResult.func1(0xc00061c5a0, 0xc0004fda60, 0xc00061c5a0)
    /go/src/github.com/keep-network/keep-core/pkg/chain/local/local.go:402 +0x30
created by github.com/keep-network/keep-core/pkg/chain/local.(*localChain).SubmitDKGResult
    /go/src/github.com/keep-network/keep-core/pkg/chain/local/local.go:401 +0x3b5
FAIL    github.com/keep-network/keep-core/pkg/beacon/relay/gjkr    171.679s

[alphastorm]

Also related: https://circleci.com/gh/keep-network/keep-core/53434 (from https://github.com/keep-network/keep-core/pull/1811)