Part 3 of expression based transform: Use computed transform

[nicklan]

Stacked PR, only review these commits

What changes are proposed in this pull request?

Use computed transforms and remove transform_to_logical. Just a draft, might need more tests, although all existing tests pass, which exercise this extensively.

How was this change tested?

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 33 lines in your changes missing coverage. Please review.

Project coverage is 83.44%. Comparing base (c3a868f) to head (6d72b75).

Files with missing lines	Patch %	Lines
ffi/src/scan.rs	0.00%	16 Missing ⚠️
kernel/src/scan/log_replay.rs	86.53%	7 Missing and 7 partials ⚠️
kernel/src/scan/mod.rs	95.58%	0 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #613      +/-   ##
==========================================
- Coverage   83.45%   83.44%   -0.01%     
==========================================
  Files          74       74              
  Lines       16877    16984     +107     
  Branches    16877    16984     +107     
==========================================
+ Hits        14084    14173      +89     
- Misses       2135     2151      +16     
- Partials      658      660       +2     

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