## Description
### Issue
Some values (like chain ID) were being leaked from the previous block/initialization into PrepareProposal and ProcessProposal, these values are only available if:
1. The node has never been stopped since the genesis block (as these values are set on `InitChain`)
2. The node has already commited a block (as the previous header was being used for the new state of prepare and process proposal).
So if a node is restarted, during the first prepare and process proposal these values won't be populated, and that will cause issues if they are being used.
### Solution
Remove any previous header information from a previous block in the prepare and process proposal contexts, making things consistent at every height.
- Added ChainID to baseapp
- Use an empty header in Commit() with only the chain id set
- Fix context for prepare and process proposal
Closes: #15269
---
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## Description
removes the dependency of tendermint/utils/log from countless locations. This is in effort of reducing Tendermint's lib usage in the sdk
this is nonbreaking as the interface is the same. To eliminate tm/utils/log in the sdk we need a few more things. Once we have fully removed the tendermint logger, I would propose we break the interface and define our own for our use case, when we pass the logger to tendermint in the node.New() function we can wrap our logger for its use case
---
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- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
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## Description
Closes: #12833
---
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- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/main/docs/building-modules)
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- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
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## Description
Upgrades the math library in the repo root and find/replaces many usages of sdk.Dec, sdk.ZeroDec, sdk.OneDec, sdk.NewDec with their legacy-ified-math-lib replacements.
Note for review: I assume that I did not find 100% of usages
---
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- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#pr-targeting))
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- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/main/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed
### Reviewers Checklist
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mmsqe
Julien Robert
ruthishvitwit
Jacob Gadikian
ocncandFacundo Medica
AmauryandFacundo Medica
Mark Rushakoff
Likhita PolavarapuandMarko
Emmanuel T Odeke
Robert Zaremba