fix: minimum scale required for decimal literal

[scgkiran]

Report line number in testcase parser

[codecov]

Codecov Report

Attention: Patch coverage is 36.50794% with 40 lines in your changes missing coverage. Please review.

Project coverage is 63.76%. Comparing base (e1e6157) to head (43c9a37).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
testcases/parser/visitor.go	28.88%	32 Missing ⚠️
types/parser/util/error_listener.go	33.33%	4 Missing ⚠️
types/parser/visitor.go	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #117      +/-   ##
==========================================
+ Coverage   63.60%   63.76%   +0.15%     
==========================================
  Files          44       44              
  Lines       10873    10875       +2     
==========================================
+ Hits         6916     6934      +18     
+ Misses       3639     3630       -9     
+ Partials      318      311       -7     

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