fix(congestion_control) - Correctly initialize the congestion info in genesis

[wacban]

Correctly initialize the congestion info in the genesis chunks. The congestion info needs to be computed based on the state root of each chunk. The boostrapping method is reused for that purpose.

Just to be clear, the congestion info is not stored in the genesis. It is recomputed when the node is started and the genesis is loaded.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 88.00000% with 18 lines in your changes missing coverage. Please review.

Project coverage is 71.64%. Comparing base (57c9796) to head (7d77d69). Report is 8 commits behind head on master.

Files	Patch %	Lines
chain/chain/src/chain.rs	80.35%	2 Missing and 9 partials :warning:
chain/chain/src/test_utils/kv_runtime.rs	0.00%	6 Missing :warning:
genesis-tools/genesis-populate/src/lib.rs	88.88%	0 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #11642 +/- ## ========================================== + Coverage 71.57% 71.64% +0.07% ========================================== Files 787 787 Lines 160728 161048 +320 Branches 160728 161048 +320 ========================================== + Hits 115039 115384 +345 + Misses 40648 40617 -31 - Partials 5041 5047 +6 ``` | [Flag](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | Coverage Δ | | |---|---|---| | [backward-compatibility](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `0.23% <0.00%> (-0.01%)` | :arrow_down: | | [db-migration](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `0.23% <0.00%> (-0.01%)` | :arrow_down: | | [genesis-check](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `1.36% <0.00%> (-0.01%)` | :arrow_down: | | [integration-tests](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `37.81% <72.00%> (+0.08%)` | :arrow_up: | | [linux](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `69.03% <82.00%> (+0.03%)` | :arrow_up: | | [linux-nightly](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `71.14% <88.00%> (+0.07%)` | :arrow_up: | | [macos](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `52.61% <75.35%> (+1.64%)` | :arrow_up: | | [pytests](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `1.59% <0.00%> (-0.01%)` | :arrow_down: | | [sanity-checks](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `1.39% <0.00%> (-0.01%)` | :arrow_down: | | [unittests](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `66.23% <88.00%> (+0.09%)` | :arrow_up: | | [upgradability](https://app.codecov.io/gh/near/nearcore/pull/11642/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `0.28% <0.00%> (-0.01%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near#carryforward-flags-in-the-pull-request-comment) to find out more.

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[wacban]

I tested it manually in the following way:

• Modify the congestion_control.py to stop in the middle when the node is congested. The node home directory is in ~/.near/test0_finished.
• ./neard --home ~/.near/test0_finished view-state dump-state --stream --file output
• ./neard --home $(pwd)/output run
• Check in logs that congestion info genesis init was triggered and that the congestion info is non-zero.
• ./neard --home $(pwd)/output view-state congestion-control print
• Check that the congestion info goes to zero after a few blocks and does not crash with the integer overflow.

[wacban]

I didn't add any new tests but the dumping logic is at least partially covered by some existing tests. I know because I broke them temporarily while implementing this :).

For completeness I also tested master using the same steps and got the error I was expecting:

thread '<unnamed>' panicked at chain/chain/src/runtime/mod.rs:412:21:
RuntimeError::UnexpectedIntegerOverflow remove_delayed_receipt_gas
stack backtrace:
   0: rust_begin_unwind
             at /rustc/129f3b9964af4d4a709d1383930ade12dfe7c081/library/std/src/panicking.rs:652:5
   1: core::panicking::panic_fmt
             at /rustc/129f3b9964af4d4a709d1383930ade12dfe7c081/library/core/src/panicking.rs:72:14
   2: near_chain::runtime::NightshadeRuntime::process_state_update::{{closure}}

[VanBarbascu]

In you testing, can you consider that the state was dumped using a binary without these changes? Our usecase is that we take an old dump image and generate a genesis from it.