refactor(oracle): simplify window progress query (#1294)

Simplifies the math for the oracle window progress query.

This was one of those things, "wait, why did I do it that way?"

---

### Author Checklist

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please add links to any relevant follow up issues._

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] added appropriate labels to the PR
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/umee-network/umee/blob/main/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] 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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your handle next to the items reviewed if you only reviewed selected items._

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

CHANGELOG.md

@@ -97,6 +97,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 - [987](https://github.com/umee-network/umee/pull/987) Streamline x/leverage CLI tests
 - [1012](https://github.com/umee-network/umee/pull/1012) Improve negative time elapsed error message
 - [1236](https://github.com/umee-network/umee/pull/1236) Improve leverage event fields.
+- [1294](https://github.com/umee-network/umee/pull/1294) Simplify window progress query math.
 
 ### Bug Fixes
 

x/oracle/keeper/grpc_query.go

@@ -148,16 +148,9 @@ func (q querier) SlashWindow(
 	ctx := sdk.UnwrapSDKContext(goCtx)
 	params := q.GetParams(ctx)
 
-	slashWindow := params.SlashWindow
-	votePeriod := params.VotePeriod
-	currentBlock := uint64(ctx.BlockHeight())
-	votePeriodsPerSlashWindow := slashWindow / votePeriod
-
-	currentSlashWindow := currentBlock / votePeriodsPerSlashWindow
-	blocksIntoSlashWindow := currentBlock - (currentSlashWindow * slashWindow)
-
 	return &types.QuerySlashWindowResponse{
-		WindowProgress: blocksIntoSlashWindow / votePeriod,
+		WindowProgress: (uint64(ctx.BlockHeight()) / params.VotePeriod) %
+			params.SlashWindow,
 	}, nil
 }