refactor(server/v2): remove serverv2.AppI (partial backport #22446)

[mergify]

Description

Realized we still haven't deleted serverv2.AppI (follow up of the Init removal)

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Summary by CodeRabbit

• New Features

  • Simplified handling of queryable parameters in gRPC server functions for improved performance.

• Bug Fixes

  • Ensured proper resource management during server shutdown by updating cleanup operations.

• Refactor

  • Removed unnecessary interface embedding in test cases, streamlining mock implementations.
  • Adjusted gRPC server initialization to enhance query management.

• Chores

  • Updated module dependencies to reflect changes in direct and indirect requirements.

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This is an automatic backport of pull request #22446 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 3014713 has failed:

On branch mergify/bp/release/v0.52.x/pr-22446
Your branch is up to date with 'origin/release/v0.52.x'.

You are currently cherry-picking commit 3014713d4.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   simapp/v2/app_di.go
	modified:   simapp/v2/simdv2/cmd/commands.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   server/v2/api/grpc/server.go
	deleted by us:   server/v2/api/grpc/service.go
	deleted by us:   server/v2/api/grpc/service_test.go
	deleted by us:   server/v2/go.mod
	deleted by us:   server/v2/server_test.go
	deleted by us:   server/v2/store/server.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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