implements copy-on-write for vote-accounts (backport #19362)

[mergify]

This is an automatic backport of pull request #19362 done by Mergify.
Cherry-pick of 8ad52fa has failed:

On branch mergify/bp/v1.8/pr-19362
Your branch is up to date with 'origin/v1.8'.

You are currently cherry-picking commit 8ad52fa09.
  (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/commitment_service.rs
	modified:   core/src/replay_stage.rs
	modified:   core/src/validator.rs
	modified:   ledger-tool/src/main.rs
	modified:   runtime/src/epoch_stakes.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   core/src/cluster_info_vote_listener.rs
	both modified:   core/src/consensus.rs
	both modified:   ledger/src/blockstore_processor.rs
	both modified:   runtime/src/bank.rs
	both modified:   runtime/src/stakes.rs
	both modified:   runtime/src/vote_account.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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[mergify]

automerge label removed due to a CI failure

[solana-grimes]

😱 New commits were pushed while the automerge label was present.

[solana-grimes]

😱 New commits were pushed while the automerge label was present.

[mergify]

automerge label removed due to a CI failure

[behzadnouri]

@carllin I will take care of merge conflicts

[behzadnouri]

@Mergifyio rebase

[mergify]

rebase

❌ Base branch update has failed

Details

Git reported the following error:

Rebasing (1/4)
Auto-merging runtime/src/vote_account.rs
CONFLICT (content): Merge conflict in runtime/src/vote_account.rs
error: could not apply df99a856f... makes solana_runtime::vote_account::VoteAccount private
hint: Resolve all conflicts manually, mark them as resolved with
hint: "git add/rm <conflicted_files>", then run "git rebase --continue".
hint: You can instead skip this commit: run "git rebase --skip".
hint: To abort and get back to the state before "git rebase", run "git rebase --abort".
Could not apply df99a856f... makes solana_runtime::vote_account::VoteAccount private

err-code: 35B49

[codecov]

Codecov Report

Merging #22139 (b814047) into v1.8 (262b157) will increase coverage by 0.0%.
The diff coverage is 98.6%.

@@           Coverage Diff           @@
##             v1.8   #22139   +/-   ##
=======================================
  Coverage    81.5%    81.5%           
=======================================
  Files         459      459           
  Lines      130618   130661   +43     
=======================================
+ Hits       106548   106603   +55     
+ Misses      24070    24058   -12     

[github-actions]

This PR has been automatically locked since there has not been any activity in past 14 days after it was merged.