cl: toType fix ast.BadExpr

[visualfc]

• toType: error return types.Typ[types.Invalid]

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (4ff40dc) 91.39% compared to head (60c65ed) 91.45%.

Files	Patch %	Lines
cl/expr.go	40.00%	3 Missing ⚠️
cl/stmt.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1622      +/-   ##
==========================================
+ Coverage   91.39%   91.45%   +0.05%     
==========================================
  Files          39       39              
  Lines       10261    10259       -2     
==========================================
+ Hits         9378     9382       +4     
+ Misses        719      713       -6     
  Partials      164      164              

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[visualfc]

#1628