chore: math lib update and type fixes (#12791)

## 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

---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
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
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#pr-targeting))
- [ ] 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)
- [ ] 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

*All items are required. Please add a note if the item is not applicable and please add
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 `!` in the type prefix if API or client breaking change
- [ ] 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)

x/mint/simulation/decoder_test.go

@@ -4,9 +4,9 @@ import (
 	"fmt"
 	"testing"
 
+	"cosmossdk.io/math"
 	"github.com/stretchr/testify/require"
 
-	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/kv"
 	moduletestutil "github.com/cosmos/cosmos-sdk/types/module/testutil"
 	"github.com/cosmos/cosmos-sdk/x/mint"
@@ -19,7 +19,7 @@ func TestDecodeStore(t *testing.T) {
 
 	dec := simulation.NewDecodeStore(encCfg.Codec)
 
-	minter := types.NewMinter(sdk.OneDec(), sdk.NewDec(15))
+	minter := types.NewMinter(math.LegacyOneDec(), math.LegacyNewDec(15))
 
 	kvPairs := kv.Pairs{
 		Pairs: []kv.Pair{

x/mint/simulation/genesis.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"math/rand"
 
+	"cosmossdk.io/math"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
 	"github.com/cosmos/cosmos-sdk/x/mint/types"
@@ -22,27 +23,27 @@ const (
 )
 
 // GenInflation randomized Inflation
-func GenInflation(r *rand.Rand) sdk.Dec {
+func GenInflation(r *rand.Rand) math.LegacyDec {
 	return sdk.NewDecWithPrec(int64(r.Intn(99)), 2)
 }
 
 // GenInflationRateChange randomized InflationRateChange
-func GenInflationRateChange(r *rand.Rand) sdk.Dec {
+func GenInflationRateChange(r *rand.Rand) math.LegacyDec {
 	return sdk.NewDecWithPrec(int64(r.Intn(99)), 2)
 }
 
 // GenInflationMax randomized InflationMax
-func GenInflationMax(r *rand.Rand) sdk.Dec {
+func GenInflationMax(r *rand.Rand) math.LegacyDec {
 	return sdk.NewDecWithPrec(20, 2)
 }
 
 // GenInflationMin randomized InflationMin
-func GenInflationMin(r *rand.Rand) sdk.Dec {
+func GenInflationMin(r *rand.Rand) math.LegacyDec {
 	return sdk.NewDecWithPrec(7, 2)
 }
 
 // GenGoalBonded randomized GoalBonded
-func GenGoalBonded(r *rand.Rand) sdk.Dec {
+func GenGoalBonded(r *rand.Rand) math.LegacyDec {
 	return sdk.NewDecWithPrec(67, 2)
 }
 

x/mint/simulation/genesis_test.go

@@ -52,7 +52,7 @@ func TestRandomizedGenState(t *testing.T) {
 	require.Equal(t, "stake", mintGenesis.Params.MintDenom)
 	require.Equal(t, "0stake", mintGenesis.Minter.BlockProvision(mintGenesis.Params).String())
 	require.Equal(t, "0.170000000000000000", mintGenesis.Minter.NextAnnualProvisions(mintGenesis.Params, math.OneInt()).String())
-	require.Equal(t, "0.169999926644441493", mintGenesis.Minter.NextInflationRate(mintGenesis.Params, sdk.OneDec()).String())
+	require.Equal(t, "0.169999926644441493", mintGenesis.Minter.NextInflationRate(mintGenesis.Params, math.LegacyOneDec()).String())
 	require.Equal(t, "0.170000000000000000", mintGenesis.Minter.Inflation.String())
 	require.Equal(t, "0.000000000000000000", mintGenesis.Minter.AnnualProvisions.String())
 }