fix(server/cmd)!: set environment prefix (cosmos#10950)

## Description



Add `envPrefix` parameter to server's `cmd.Execute` method allowing chains to set custom `envPrefix`.

---

### 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...

- [x] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [x] added `!` to the type prefix if API or client breaking change
- [x] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/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/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [x] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [x] reviewed "Files changed" and left comments if necessary
- [x] 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)

simd/cmd/cmd_test.go

@@ -20,5 +20,5 @@ func TestInitCmd(t *testing.T) {
 		fmt.Sprintf("--%s=%s", cli.FlagOverwrite, "true"), // Overwrite genesis.json, in case it already exists
 	})
 
-	require.NoError(t, svrcmd.Execute(rootCmd, simapp.DefaultNodeHome))
+	require.NoError(t, svrcmd.Execute(rootCmd, "", simapp.DefaultNodeHome))
 }

simd/main.go

@@ -12,7 +12,7 @@ import (
 func main() {
 	rootCmd, _ := cmd.NewRootCmd()
 
-	if err := svrcmd.Execute(rootCmd, simapp.DefaultNodeHome); err != nil {
+	if err := svrcmd.Execute(rootCmd, "", simapp.DefaultNodeHome); err != nil {
 		switch e := err.(type) {
 		case server.ErrorCode:
 			os.Exit(e.Code)