Fix test coverage

[warunalakshitha]

Purpose

Describe the problems, issues, or needs driving this feature/fix and include links to related issues.

Fixes #

Approach

Describe how you are implementing the solutions along with the design details.

Samples

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Remarks

List any other known issues, related PRs, TODO items, or any other notes related to the PR.

Check List

• Read the Contributing Guide
• Updated Change Log
• Checked Tooling Support (#)
• Added necessary tests
  • Unit Tests
  • Spec Conformance Tests
  • Integration Tests
  • Ballerina By Example Tests
• Increased Test Coverage
• Added necessary documentation
  • API documentation
  • Module documentation in Module.md files
  • Ballerina By Examples

[codecov]

Codecov Report

Attention: Patch coverage is 8.69565% with 84 lines in your changes are missing coverage. Please review.

Project coverage is 76.47%. Comparing base (5b03581) to head (ccba474).
Report is 58 commits behind head on master.

Files	Patch %	Lines
...java/io/ballerina/runtime/internal/BalRuntime.java	7.27%	51 Missing ⚠️
.../ballerina/runtime/internal/util/RuntimeUtils.java	0.00%	31 Missing ⚠️
...rc/main/java/io/ballerina/runtime/api/Runtime.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #42415      +/-   ##
============================================
- Coverage     76.50%   76.47%   -0.03%     
- Complexity    53179    53186       +7     
============================================
  Files          2892     2892              
  Lines        201003   201091      +88     
  Branches      26188    26198      +10     
============================================
+ Hits         153777   153793      +16     
- Misses        38766    38838      +72     
  Partials       8460     8460              

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