backport: merge bitcoin#23280 (coalesce chainstate loading sequence between {,non-}unittest codepaths)

[kwvg]

Additional Information

• Dependent on backport: merge bitcoin#22772, #22987, #23185, #23157, #23173, #23249, #23211, #22677, #23649, #23683, #23636, #22626 (auxiliary backports: part 17) #6296

• 9162a4f has been omitted because Dash utilizes chainstate initialization to init CEvoDB, CMNHFManager, CDeterministicMNManager, CCreditPoolManager, llmq::CQuorumSnapshotManager, LLMQContext and CChainstateHelper, most of which reside in NodeContext directly or indirectly.

  • Due to one of the backport's intention was to unify code between init.cpp and setup_common.cpp, Dash-specific initialization code (to the extent that it can be moved out non-disruptively) has been spun out into DashChainstateSetup(Close)() so it can be used in setup_common.cpp and validation_chainstatemanager_tests.cpp.

  • The latter of the two is also the reason why DashTestSetup(Close)() (now DashPostChainstateSetup(Close)()) exists

Breaking Changes

None expected.

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas (note: N/A)
• I have added or updated relevant unit/integration/functional/e2e tests
• I have made corresponding changes to the documentation (note: N/A)
• I have assigned this pull request to a milestone (for repository code-owners and collaborators only)

[github-actions]

This pull request has conflicts, please rebase.

[github-actions]

This pull request has conflicts, please rebase.

[UdjinM6]

LGTM, light ACK 1a0d125

nit: clang format complains a bit

[kwvg]

Current approach of allowing NodeContext seems to cause problems down the line, marking as draft until resolved

[github-actions]

This pull request has conflicts, please rebase.