refactor: state: Move randomness versioning out of the VM

[arajasek]

Related Issues

The rand versioning in the VM is currently bloated, and in the wrong place -- the VM shouldn't be reasoning about how randomness is versioned.

Proposed Changes

Moves the randomness versioning logic out of the VM and into the Rand module.

Checklist

Before you mark the PR ready for review, please make sure that:

• All commits have a clear commit message.
• The PR title is in the form of of <PR type>: <#issue number> <area>: <change being made>
  • example: fix: #1234 mempool: Introduce a cache for valid signatures
  • PR type: fix, feat, INTERFACE BREAKING CHANGE, CONSENSUS BREAKING, build, chore, ci, docs, misc,perf, refactor, revert, style, test
  • area: api, chain, state, vm, data transfer, market, mempool, message, block production, multisig, networking, paychan, proving, sealing, wallet
• This PR has tests for new functionality or change in behaviour
• If new user-facing features are introduced, clear usage guidelines and / or documentation updates should be included in https://lotus.filecoin.io or Discussion Tutorials.
• CI is green

[codecov]

Codecov Report

Merging #7816 (aa1b770) into master (a4728d3) will increase coverage by 0.03%.
The diff coverage is 90.90%.

@@            Coverage Diff             @@
##           master    #7816      +/-   ##
==========================================
+ Coverage   39.47%   39.51%   +0.03%     
==========================================
  Files         654      654              
  Lines       70033    70010      -23     
==========================================
+ Hits        27649    27665      +16     
+ Misses      37633    37605      -28     
+ Partials     4751     4740      -11     

Impacted Files	Coverage Δ
chain/vm/vm.go	62.96% <ø> (ø)
chain/gen/genesis/miners.go	57.80% <50.00%> (+1.93%)	⬆️
chain/rand/rand.go	66.66% <93.75%> (+8.77%)	⬆️
chain/stmgr/stmgr.go	65.34% <100.00%> (-1.15%)	⬇️
chain/vm/runtime.go	53.45% <100.00%> (-0.75%)	⬇️
markets/loggers/loggers.go	89.28% <0.00%> (-10.72%)	⬇️
chain/actors/builtin/miner/diff.go	52.94% <0.00%> (-5.89%)	⬇️
chain/stmgr/execute.go	86.95% <0.00%> (-4.35%)	⬇️
storage/wdpost_sched.go	77.45% <0.00%> (-3.93%)	⬇️
chain/vm/mkactor.go	48.48% <0.00%> (-3.04%)	⬇️
... and 16 more

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[ZenGround0]

This is a very nice change. But I feel deeply conflicted about your go.sum

[ZenGround0]

Fix conflicts

[arajasek]

this is fixing the conflicts ;)