fix: set header hash every block (backport #9552)

[mergify]

This is an automatic backport of pull request #9552 done by Mergify.
Cherry-pick of 81747b4 has failed:

On branch mergify/bp/release/v0.42.x/pr-9552
Your branch is up to date with 'origin/release/v0.42.x'.

You are currently cherry-picking commit 81747b4a9.
  (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/baseapp_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://help.github.com/articles/checking-out-pull-requests-locally/

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[codecov]

Codecov Report

Merging #9555 (dd69e88) into release/v0.42.x (79d369c) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@               Coverage Diff                @@
##           release/v0.42.x    #9555   +/-   ##
================================================
  Coverage            62.04%   62.04%           
================================================
  Files                  619      619           
  Lines                35826    35831    +5     
================================================
+ Hits                 22227    22232    +5     
  Misses               11257    11257           
  Partials              2342     2342           

Impacted Files	Coverage Δ
baseapp/abci.go	58.33% <100.00%> (+0.48%)	⬆️