[UNIT]test: add unit test cases for interpreter to improve coverage

[kylo5aby]

Summary

To quickly improve WAMR's software quality, this PR uses LLM to generate unit test cases for the interpreter module.

Changes

• Add 15 new unit test cases for iwasm/interpreter module
• Improve iwasm/interpreter coverage:
  • Lines coverage: 33.7% → 35.0% (+1.3%)
  • Functions coverage: 55.4% → 56.2% (+0.8%)

Testing

All new test cases pass successfully.

Welcome any feedback or suggestions on these AI-generated test cases. Please let me know if you have ideas for improvement.

[lum1n0us]

The file and directory structure should be organized as follows:

unit
├── CMakeLists.txt              -> add_subdirectory(smart-cases)
└── smart-cases
    ├── CMakeLists.txt          -> add_subdirectory(interpreter)
    └── interpreter
        ├── CMakeLists.txt
        └── wasm-apps

[lum1n0us]

IMO, ideally, for a function, there should be one positive case, one negative case, and one corner case for testing.

[kylo5aby]

The file and directory structure should be organized as follows:

unit
├── CMakeLists.txt              -> add_subdirectory(smart-cases)
└── smart-cases
    ├── CMakeLists.txt          -> add_subdirectory(interpreter)
    └── interpreter
        ├── CMakeLists.txt
        └── wasm-apps

resolved