fix(baseapp)!: Halt at height now does not produce the halt height block (backport #21256)

[mergify]

Description

In the issue linked, it is described how the behavior changed from previous versions to v0.50.x, in which we now produce the halt height block and then halt. This PR reverts this change to avoid producing the halt height block, meaning that if the halt-height is 100, the block 99 will be committed while block 100 not.

Closes: #21226

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Summary by CodeRabbit

• New Features

  • Enhanced halting conditions for the application to include equality checks for block height and timestamp.
  • Clarified behavior of the halt height feature to prevent commitment of blocks at the halt height.

• Bug Fixes

  • Updated test cases to ensure accurate evaluation of new halting conditions, improving the reliability of the application’s lifecycle management.

• Documentation

  • Improved clarity on the halt height feature and overall system behavior in the CHANGELOG.

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This is an automatic backport of pull request #21256 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of e2ec889 has failed:

On branch mergify/bp/release/v0.52.x/pr-21256
Your branch is up to date with 'origin/release/v0.52.x'.

You are currently cherry-picking commit e2ec889bb.
  (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:   baseapp/abci.go
	modified:   baseapp/abci_test.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   CHANGELOG.md

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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[github-actions]

@julienrbrt your pull request is missing a changelog!