TestDealPublisher is flaky

[vyzo]

As seen in https://app.circleci.com/pipelines/github/filecoin-project/lotus/15905/workflows/5d4be844-ce96-4922-ac4c-09503c0d3b3e/jobs/205203

Specifics:

=== RUN   TestDealPublisher/ignore_deals_with_cancelled_context
...
    dealpublisher_test.go:239: 
        	Error Trace:	dealpublisher_test.go:239
        	            				dealpublisher_test.go:126
        	Error:      	"[{{QmTLZn8wTHzQ4Vh9vxi68uN4HiR7EB26ro6paNMP8k61GQ %!s(abi.PaddedPieceSize=0) %!s(bool=false) f2nfm7gnbtxhjvq4bvbdnyrypubdq3xtvr2e2rw5q f24j2ie33bbjxd2oqjnf6o5qcllcbwajp7drnrqmy  20 120 0 0 0} {%!s(crypto.SigType=1) signature data}} {{QmQ3aqKBSY5r8k1CZv7FPhcPEjNG47yzSuzKpfUUgJXdB4 %!s(abi.PaddedPieceSize=0) %!s(bool=false) f2nfm7gnbtxhjvq4bvbdnyrypubdq3xtvr2e2rw5q f24j2ie33bbjxd2oqjnf6o5qcllcbwajp7drnrqmy  20 120 0 0 0} {%!s(crypto.SigType=1) signature data}} {{QmSdveHM1ShmHEjrNyLdkY9MYPyEKCgVvWXHvvbXCTP951 %!s(abi.PaddedPieceSize=0) %!s(bool=false) f2nfm7gnbtxhjvq4bvbdnyrypubdq3xtvr2e2rw5q f24j2ie33bbjxd2oqjnf6o5qcllcbwajp7drnrqmy  20 120 0 0 0} {%!s(crypto.SigType=1) signature data}}]" should have 2 item(s), but has 3
        	Test:       	TestDealPublisher/ignore_deals_with_cancelled_context

[vyzo]

Also this: https://app.circleci.com/pipelines/github/filecoin-project/lotus/15905/workflows/a1a6dcc5-d7bc-4b92-95af-0b0a71443042/jobs/205231

=== RUN   TestDealPublisher/publish_deals_that_exceed_max_deals_per_message_within_publish_period,_and_one_after
...
    dealpublisher_test.go:239: 
        	Error Trace:	dealpublisher_test.go:239
        	            				dealpublisher_test.go:126
        	Error:      	"[{{Qmdx97coS2FKH2Wc1sr3fUnrw3ooicyfBcaEKQx9vdiGU2 %!s(abi.PaddedPieceSize=0) %!s(bool=false) f2nfm7gnbtxhjvq4bvbdnyrypubdq3xtvr2e2rw5q f24j2ie33bbjxd2oqjnf6o5qcllcbwajp7drnrqmy  20 120 0 0 0} {%!s(crypto.SigType=1) signature data}} {{QmRKuYmrQu1oMLHDyiA2v66upmEB5JLRqVhVEYXYYM5agi %!s(abi.PaddedPieceSize=0) %!s(bool=false) f2nfm7gnbtxhjvq4bvbdnyrypubdq3xtvr2e2rw5q f24j2ie33bbjxd2oqjnf6o5qcllcbwajp7drnrqmy  20 120 0 0 0} {%!s(crypto.SigType=1) signature data}}]" should have 1 item(s), but has 2
        	Test:       	TestDealPublisher/publish_deals_that_exceed_max_deals_per_message_within_publish_period,_and_one_after

[vyzo]

I am disabling this test in #6777 (where a lot of flakes has been observed) as this hinders our ability to merge.

[Stebalien]

Apparently, this is still flaky.

[Stebalien]

Ok, fixed again.