add message to error map for repeat range check

[charles-cooper]

What I did

since d48438e, loops can revert depending on user input. add it to the error map so it's easier to debug.

edit -- actually, since 3de1415

How I did it

How to verify it

Commit message

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Description for the changelog

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[codecov-commenter]

Codecov Report

Merging #3542 (d4dbedd) into master (3c3285c) will decrease coverage by 0.24%.
The diff coverage is 100.00%.

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@@            Coverage Diff             @@
##           master    #3542      +/-   ##
==========================================
- Coverage   89.14%   88.91%   -0.24%     
==========================================
  Files          85       85              
  Lines       11362    11362              
  Branches     2584     2584              
==========================================
- Hits        10129    10102      -27     
- Misses        812      838      +26     
- Partials      421      422       +1     

Files Changed	Coverage Δ
vyper/codegen/stmt.py	89.92% <100.00%> (ø)

... and 4 files with indirect coverage changes

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