[master] Fix for providing support for pattern constraint in openapi to ballerina code generation

[lnash94]

Purpose

Fix ballerina-platform/ballerina-library#5290

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[codecov]

Codecov Report

Patch coverage: 76.92% and project coverage change: +0.03 🎉

Comparison is base (7872aeb) 78.91% compared to head (db2bc9b) 78.95%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    ballerina-platform/openapi-tools#1340      +/-   ##
============================================
+ Coverage     78.91%   78.95%   +0.03%     
- Complexity     1656     1661       +5     
============================================
  Files           124      124              
  Lines          9690     9716      +26     
  Branches       1569     1573       +4     
============================================
+ Hits           7647     7671      +24     
- Misses         1470     1472       +2     
  Partials        573      573              

Impacted Files	Coverage Δ
...java/io/ballerina/openapi/core/GeneratorUtils.java	88.16% <50.00%> (+0.02%)	⬆️
...api/core/generators/schema/TypeGeneratorUtils.java	90.27% <81.81%> (-0.46%)	⬇️

... and 3 files with indirect coverage changes

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
3 Code Smells

No Coverage information
0.0% Duplication

[NipunaRanasinghe]

LGTM