Prep retrieval for selectors: no functional changes

[ribasushi]

No description provided.

[codecov]

Codecov Report

Merging #7306 (2c5f438) into master (92c12f9) will increase coverage by 0.02%.
The diff coverage is 38.88%.

@@            Coverage Diff             @@
##           master    #7306      +/-   ##
==========================================
+ Coverage   39.15%   39.17%   +0.02%     
==========================================
  Files         614      614              
  Lines       64984    64989       +5     
==========================================
+ Hits        25443    25462      +19     
+ Misses      35135    35120      -15     
- Partials     4406     4407       +1     

Impacted Files	Coverage Δ
node/impl/client/client.go	40.46% <38.88%> (-0.15%)	⬇️
chain/actors/builtin/paych/paych.go	16.88% <0.00%> (-5.20%)	⬇️
extern/sector-storage/worker_tracked.go	90.14% <0.00%> (-4.23%)	⬇️
chain/gen/gen.go	66.06% <0.00%> (-1.22%)	⬇️
storage/wdpost_changehandler.go	97.64% <0.00%> (-0.95%)	⬇️
markets/storageadapter/dealpublisher.go	80.97% <0.00%> (-0.49%)	⬇️
node/impl/full/chain.go	14.73% <0.00%> (+0.57%)	⬆️
miner/miner.go	55.96% <0.00%> (+0.66%)	⬆️
chain/store/store.go	65.07% <0.00%> (+0.70%)	⬆️
chain/vm/vm.go	60.59% <0.00%> (+1.11%)	⬆️
... and 4 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 92c12f9...2c5f438. Read the comment docs.

[ribasushi]

All of this is cosmetic changes only, switching bulk of car-retrieval to SelectiveCar. codecov will bounce back in another branch.