fix: switch expression improvement

[seokjun7410]

Fixes #4817.

Remove switch statement for primitiveType in LexicalPreservingPrinter

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 58.335%. Comparing base (ef6975d) to head (071e827).
⚠️ Report is 7 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff               @@
##              master     #4823       +/-   ##
===============================================
+ Coverage     58.326%   58.335%   +0.009%     
  Complexity      2518      2518               
===============================================
  Files            671       671               
  Lines          38826     38808       -18     
  Branches        7054      7053        -1     
===============================================
- Hits           22646     22639        -7     
+ Misses         13295     13284       -11     
  Partials        2885      2885               

Flag	Coverage Δ
AlsoSlowTests	58.335% <100.000%> (+0.009%)	⬆️
javaparser-core	58.335% <100.000%> (+0.009%)	⬆️
javaparser-symbol-solver	58.335% <100.000%> (+0.009%)	⬆️
jdk-10	57.887% <100.000%> (+0.013%)	⬆️
jdk-11	57.886% <100.000%> (+0.008%)	⬆️
jdk-12	57.886% <100.000%> (+0.008%)	⬆️
jdk-13	57.886% <100.000%> (+0.008%)	⬆️
jdk-14	58.133% <100.000%> (+0.008%)	⬆️
jdk-15	58.133% <100.000%> (+0.008%)	⬆️
jdk-16	58.108% <100.000%> (+0.008%)	⬆️
jdk-17	58.262% <100.000%> (+0.011%)	⬆️
jdk-18	58.262% <100.000%> (+0.011%)	⬆️
jdk-8	57.888% <100.000%> (+0.008%)	⬆️
jdk-9	57.884% <100.000%> (+0.008%)	⬆️
macos-latest	58.328% <100.000%> (+0.009%)	⬆️
ubuntu-latest	58.323% <100.000%> (+0.009%)	⬆️
windows-latest	58.317% <100.000%> (+0.009%)	⬆️

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Files with missing lines	Coverage Δ
.../com/github/javaparser/ast/type/PrimitiveType.java	65.671% <100.000%> (ø)
.../lexicalpreservation/LexicalPreservingPrinter.java	80.779% <100.000%> (+1.126%)	⬆️

... and 1 file with indirect coverage changes

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[jlerbsc]

Thank you for this PR