fixed type hint detection for dollar var names

[codecov[bot]]

Codecov Report

Merging #482 into dev will increase coverage by 6.86%. The diff coverage is 100%.

@@            Coverage Diff             @@
##              dev     #482      +/-   ##
==========================================
+ Coverage   89.92%   96.78%   +6.86%     
==========================================
  Files         102      102              
  Lines        6542     6542              
  Branches      895      896       +1     
==========================================
+ Hits         5883     6332     +449     
+ Misses        254      209      -45     
+ Partials      405        1     -404

Impacted Files	Coverage Δ
.../checkstyle/checks/type/EnforceVarTypeHintCheck.hx	95.83% <100%> (+2.08%)	:arrow_up:
...rc/checkstyle/checks/whitespace/EmptyLinesCheck.hx	100% <0%> (+1.02%)	:arrow_up:
src/checkstyle/checks/whitespace/LineCheckBase.hx	100% <0%> (+1.29%)	:arrow_up:
...rc/checkstyle/checks/coding/CodeSimilarityCheck.hx	97.22% <0%> (+1.38%)	:arrow_up:
src/checkstyle/checks/size/MethodLengthCheck.hx	62.31% <0%> (+1.44%)	:arrow_up:
src/checkstyle/checks/block/RightCurlyCheck.hx	98.89% <0%> (+1.65%)	:arrow_up:
...c/checkstyle/checks/whitespace/ArrayAccessCheck.hx	100% <0%> (+2.5%)	:arrow_up:
src/checkstyle/checks/whitespace/WrapCheckBase.hx	100% <0%> (+3.03%)	:arrow_up:
src/checkstyle/checks/naming/NameCheckBase.hx	86.66% <0%> (+3.33%)	:arrow_up:
... and 63 more

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