repl: improve tab completion on computed properties

[dario-piotrowicz]

improve the tab completion capabilities around computed properties by replacing the use of brittle and error prone Regex checks with more robust AST based analysis

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Followup from #58709

[dario-piotrowicz]

Note: I'm removing this comment since I think that it is inaccurate (and as a consequence misleading), since various type of lines pass through here, like for example { a: true }

I think/hope that the code structure makes it clear enough what this else if block is for (I also have half a mind to do some refactoring to also make things clearer later on 🤔)

[codecov]

Codecov Report

Attention: Patch coverage is 89.10891% with 11 lines in your changes missing coverage. Please review.

Project coverage is 90.09%. Comparing base (c3b9868) to head (1398800).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/repl.js	89.10%	10 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #58775      +/-   ##
==========================================
- Coverage   90.13%   90.09%   -0.04%     
==========================================
  Files         640      640              
  Lines      188294   188399     +105     
  Branches    36923    36945      +22     
==========================================
+ Hits       169712   169747      +35     
- Misses      11304    11354      +50     
- Partials     7278     7298      +20     

Files with missing lines	Coverage Δ
lib/repl.js	94.78% <89.10%> (-0.09%)	⬇️

... and 24 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/67587/