feat: implement new post-condition features

[brice-stacks]

Description

Implements new features in stacksgov/sips#257 for epoch 3.4.

• Originator mode: deny mode for origin account, allow mode for others
• MaySend condition code for NFTs: the asset may be sent, but it doesn't have to be

Applicable issues

• fixes #

Additional info (benefits, drawbacks, caveats)

Checklist

• Test coverage for new or modified code paths
• For new Clarity features or consensus changes, add property tests (see docs/property-testing.md)
• Changelog is updated
• Required documentation changes (e.g., rpc/openapi.yaml for RPC endpoints, event-dispatcher.md for new events)
• New clarity functions have corresponding PR in clarity-benchmarking repo

[codecov]

Codecov Report

❌ Patch coverage is 91.79266% with 38 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.43%. Comparing base (8a9f3f2) to head (b1af687).

Files with missing lines	Patch %	Lines
stackslib/src/chainstate/stacks/block.rs	60.00%	30 Missing ⚠️
stackslib/src/chainstate/stacks/db/transactions.rs	98.14%	6 Missing ⚠️
stackslib/src/chainstate/stacks/transaction.rs	96.61%	2 Missing ⚠️

❌ Your project check has failed because the head coverage (68.43%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #6885       +/-   ##
============================================
+ Coverage    47.54%   68.43%   +20.89%     
============================================
  Files          597      597               
  Lines       359952   360383      +431     
============================================
+ Hits        171126   246629    +75503     
+ Misses      188826   113754    -75072     

Files with missing lines	Coverage Δ
stacks-common/src/types/mod.rs	72.64% <100.00%> (+0.68%)	⬆️
stackslib/src/chainstate/stacks/mod.rs	73.18% <100.00%> (-3.50%)	⬇️
stackslib/src/clarity_vm/clarity.rs	87.11% <100.00%> (+21.30%)	⬆️
stackslib/src/chainstate/stacks/transaction.rs	75.30% <96.61%> (+30.80%)	⬆️
stackslib/src/chainstate/stacks/db/transactions.rs	76.04% <98.14%> (+47.21%)	⬆️
stackslib/src/chainstate/stacks/block.rs	91.10% <60.00%> (+55.75%)	⬆️

... and 471 files with indirect coverage changes

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