Fix renderDelay not being applied to dynamicBlocks

[cmdcolin]

This is a more minimal PR to address same issue as #3595

That PR tried to introduce many refactorings to the block based system including how we hydrate content from our web worker, but I ran into many odd errors with this.

This PR just adds a delay before creating the makeAbortableReaction on the serverSideRenderedBlock afterAttach

Fixes #887

[codecov]

Codecov Report

Merging #3637 (e1d4ced) into main (193fbec) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #3637      +/-   ##
==========================================
+ Coverage   63.06%   63.08%   +0.01%     
==========================================
  Files         871      871              
  Lines       30189    30190       +1     
  Branches     7269     7269              
==========================================
+ Hits        19039    19044       +5     
+ Misses      10965    10961       -4     
  Partials      185      185              

Impacted Files	Coverage Δ
...aseLinearDisplay/models/serverSideRenderedBlock.ts	95.27% <100.00%> (+0.03%)	⬆️

... and 3 files with indirect coverage changes

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