feat: add x/group app wiring integration tests (#12243)

## Description

ref: #12024 



---

### 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)

runtime/app.go

@@ -45,6 +45,7 @@ type App struct {
 	beginBlockers     []func(sdk.Context, abci.RequestBeginBlock)
 	endBlockers       []func(sdk.Context, abci.RequestEndBlock) []abci.ValidatorUpdate
 	baseAppOptions    []BaseAppOption
+	msgServiceRouter  *baseapp.MsgServiceRouter
 }
 
 // RegisterModules registers the provided modules with the module manager and

runtime/builder.go

@@ -29,7 +29,6 @@ func (a *AppBuilder) Build(
 	logger log.Logger,
 	db dbm.DB,
 	traceStore io.Writer,
-	msgServiceRouter *baseapp.MsgServiceRouter,
 	baseAppOptions ...func(*baseapp.BaseApp),
 ) *App {
 	for _, option := range a.app.baseAppOptions {
@@ -37,7 +36,7 @@ func (a *AppBuilder) Build(
 	}
 
 	bApp := baseapp.NewBaseApp(a.app.config.AppName, logger, db, nil, baseAppOptions...)
-	bApp.SetMsgServiceRouter(msgServiceRouter)
+	bApp.SetMsgServiceRouter(a.app.msgServiceRouter)
 	bApp.SetCommitMultiStoreTracer(traceStore)
 	bApp.SetVersion(version.Version)
 	bApp.SetInterfaceRegistry(a.app.interfaceRegistry)

runtime/module.go

@@ -3,6 +3,8 @@ package runtime
 import (
 	"fmt"
 
+	abci "github.com/tendermint/tendermint/abci/types"
+
 	runtimev1alpha1 "cosmossdk.io/api/cosmos/app/runtime/v1alpha1"
 	"cosmossdk.io/core/appmodule"
 	"github.com/cosmos/cosmos-sdk/baseapp"
@@ -12,7 +14,6 @@ import (
 	"github.com/cosmos/cosmos-sdk/std"
 	storetypes "github.com/cosmos/cosmos-sdk/store/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
-	abci "github.com/tendermint/tendermint/abci/types"
 )
 
 // BaseAppOption is a depinject.AutoGroupType which can be used to pass
@@ -62,15 +63,17 @@ func provideCodecs(moduleBasics map[string]AppModuleBasicWrapper) (
 	std.RegisterLegacyAminoCodec(amino)
 
 	cdc := codec.NewProtoCodec(interfaceRegistry)
+	msgServiceRouter := baseapp.NewMsgServiceRouter()
 	app := &App{
 		storeKeys:         nil,
 		interfaceRegistry: interfaceRegistry,
 		cdc:               cdc,
 		amino:             amino,
 		basicManager:      basicManager,
+		msgServiceRouter:  msgServiceRouter,
 	}
 
-	return interfaceRegistry, cdc, amino, app, cdc, baseapp.NewMsgServiceRouter()
+	return interfaceRegistry, cdc, amino, app, cdc, msgServiceRouter
 }
 
 type appInputs struct {