…y first block - 7/n

906c2d7 refactor: add annotation gsl::not_null for ConstructCreditPool (Konstantin Akimov)
f1905ca fix: intermittent missing of PoSe ban in feature_llmq_simplepose.py (Konstantin Akimov)
cf84dff fix: bump time for all nodes during mine_quorum in feature_llmq_rotation.py test (Konstantin Akimov)
efd4701 fix: intermittent error for feature_llmq_simplepose due to rotating quorums (Konstantin Akimov)
2bafadf feat: put DIP0024 activation to block 1 on RegTest (Konstantin Akimov)
632c4c4 feat: re-bury DIP0024 with new height when quorums actually appeared (Konstantin Akimov)
343c74b fix: intermittent error in feature_index_prune due to DKG influence (Konstantin Akimov)
de821b9 refactor: remove command line argument -bip147height, -dip8params (Konstantin Akimov)
d8ce0a7 docs: updated comment for DIP0003 activation on RegTest (Konstantin Akimov)
4dafec8 fix: add check that DIP0003 activated before retrieving CbTx for CreditPool (Konstantin Akimov)
26e9813 fix: assertion in Credit Pool validation during connecting blocks (Konstantin Akimov)

Pull request description:

  ## Issue being fixed or feature implemented
  This PR is 7th in the achieving ultimate goal to activate old forks from block 1.
  It helps to run unit and functional tests faster; it helps for platform's dev-environment to start faster.

  ## What was done?
  Prior work: #6187, #6189, #6214, #6225, #6269, #6275

  This PR:
   - simplify DIP0024 activation and activate it from block 1 at RegTest
   - removes command lines arguments: -bip147height, -dip8params
   - fixed intermittent errors in feature_index_prune.py and feature_llmq_simplepose.py
   - fix assertion crash on Regtest if using strange combination of -testactivationheight and -dip3params

  ## How Has This Been Tested?
  Run unit, functional tests.

  ## Breaking Changes
  [regtest only] -dip8params, -bip147height are removed.

  ## Checklist:
  - [x] I have performed a self-review of my own code
  - [x] I have commented my code, particularly in hard-to-understand areas
  - [x] I have added or updated relevant unit/integration/functional/e2e tests
  - [x] I have made corresponding changes to the documentation
  - [x] I have assigned this pull request to a milestone

ACKs for top commit:
  UdjinM6:
    utACK 906c2d7
  PastaPastaPasta:
    utACK 906c2d7

Tree-SHA512: fab8a9bc03bb7f220c19dd952a03f8fec0b6ef1362d7308eb77c90e0ba814a241bb2bf36beccf78bb285ede1b6d85ec52fa19b3729ac9b643b420d13fbb63b47