Fixed handling of source code option in Java codeanalyzer

[sinha108]

Motivation and Context

This PR fixes the handling of source_code option in JCodeanalyzer. If this option is specified, the application instance is created by analyzing a single file instead of the regular analysis path with project dir.

How Has This Been Tested?

Tested by initializing a CLDK instance with stringified Java code specified as the source_code option and checking the generated symbol table.

CLDK(language="java").analysis(source_code=java_code, analysis_level=AnalysisLevel.symbol_table)

Breaking Changes

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the Codellm-Devkit Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context