v1.17: Add metrics for locking the blockhash queue in banking stage (backport of #34382)

[mergify]

This is an automatic backport of pull request #34382 done by Mergify.
Cherry-pick of 2971e84 has failed:

On branch mergify/bp/v1.17/pr-34382
Your branch is up to date with 'origin/v1.17'.

You are currently cherry-picking commit 2971e84ec8.
  (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:   core/src/banking_stage/committer.rs
	modified:   core/src/banking_stage/consumer.rs
	modified:   core/src/banking_stage/leader_slot_timing_metrics.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   core/src/banking_stage/consume_worker.rs

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

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[codecov]

Codecov Report

Merging #34384 (addc566) into v1.17 (78e7796) will increase coverage by 0.0%.
The diff coverage is 100.0%.

Additional details and impacted files

@@           Coverage Diff           @@
##            v1.17   #34384   +/-   ##
=======================================
  Coverage    81.8%    81.8%           
=======================================
  Files         803      803           
  Lines      218173   218176    +3     
=======================================
+ Hits       178526   178556   +30     
+ Misses      39647    39620   -27