ci: actually enable v2 system test (backport #21539)

[mergify]

Description

Closes: #21881

ref: #20800

Noticed when doing the CI overview to Claude.
Our system tests were not running on v2, but only on simapp v1 legacy and simapp v1 depinject.
Deleting as well, scripts that shouldn't have been pushed.

Additionally, it fixes all error that popped up to make the test pass.

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Summary by CodeRabbit

Summary by CodeRabbit

• Chores

  • Updated the GitHub Actions workflow for system tests to streamline execution by removing job dependencies.

• New Features

  • Introduced a new function to manage command-line arguments based on the simulator version, enhancing flexibility in test configurations.
  • Enhanced debugging capabilities in transaction processing with additional parameters for clearer logging.

• Bug Fixes

  • Refined the skip message for a test to provide clearer context regarding the state of unordered transaction handling.
  • Clarified comments in tests to specify urgency for pending fixes before the next release.
  • Improved error handling in transaction validation to enhance response clarity.
  • Adjusted halt conditions in the consensus process for earlier triggering based on configured values.

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This is an automatic backport of pull request #21539 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of f927e9b has failed:

On branch mergify/bp/release/v0.52.x/pr-21539
Your branch is up to date with 'origin/release/v0.52.x'.

You are currently cherry-picking commit f927e9b55.
  (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:   .github/workflows/test.yml
	modified:   Makefile
	modified:   client/grpc/cmtservice/status_test.go
	modified:   client/v2/autocli/query_test.go
	deleted:    scripts/local-testnet.sh
	modified:   server/v2/cometbft/abci.go
	modified:   server/v2/cometbft/commands.go
	modified:   server/v2/cometbft/query.go
	modified:   server/v2/cometbft/streaming.go
	modified:   server/v2/cometbft/types/errors/errors.go
	modified:   server/v2/cometbft/utils.go
	modified:   tests/systemtests/testnet_init.go
	modified:   tests/systemtests/unordered_tx_test.go
	modified:   x/auth/ante/basic_test.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   core/server/app.go
	both modified:   server/v2/cometbft/go.mod
	both modified:   server/v2/cometbft/go.sum
	deleted by us:   server/v2/stf/stf.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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