Fix type mismatch error messages on lists

[toinehartman]

Fix error messages on certain list operations.

Closes #2126.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 49%. Comparing base (0ccf803) to head (f1a6e65).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/org/rascalmpl/interpreter/result/Result.java	0%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##              main   #2127   +/-   ##
=======================================
  Coverage       49%     49%           
+ Complexity    6249    6246    -3     
=======================================
  Files          675     675           
  Lines        59268   59268           
  Branches      8641    8641           
=======================================
+ Hits         29570   29576    +6     
+ Misses       27462   27459    -3     
+ Partials      2236    2233    -3     

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