Commits on Feb 15, 2022

1. Cherry-pick PR microsoft#47738 into release-4.6 …

   Component commits:
   628da10 Eliminate redundant or meaningless elaborations in type relations
   
   a009ee1 Accept new baselines
   
   a65794c Add resetErrorInfo (though, oddly, shouldn't be necessary)
   
   f269f42 Less aggressive reduction in second pass union/intersection checks
   
   1312e8a Accept new baselines
   
   b82966f Restructure and back off a little bit more
   
   f0b8742 Only cache union/intersection relations once
   
   9404e06 Accept new baselines
   
   4866ce5 Properly cache identity relations, clean up error reporting
   
   2670b26 Move more logic to cached side of relation checks
   
   adb37a5 Optimize and remove more redundant elaborations
   
   16b986b Accept new baselines
   
   1c69acb Remove unnecessary error state capture
   
   530c876 More optimizing
   
   25a71c4 Cache isWeakType computation
   
   c427a46 Revert "Cache isWeakType computation"
   This reverts commit 25a71c4.
   
   1d70b01 Address CR feedback
   
   28439f7 Merge branch 'main' into fix47668
   # Conflicts:
   #	src/compiler/diagnosticMessages.json
   
   c472ba5 Accept new baselines

   

   ahejlsberg authored and typescript-bot committed Feb 15, 2022
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