fix: Enhance extract_class_name function to identify Component subclasses

[ogabrielluiz]

This pull request includes improvements to the extract_class_name function in the src/backend/base/langflow/utils/validate.py file. The changes enhance the function's robustness and readability by adding type annotations, a detailed docstring, and additional error handling.

Improvements to extract_class_name function:

• Added type annotations to specify that the code parameter is a string and the function returns a string.
• Included a detailed docstring that describes the function's purpose, arguments, return value, and potential exceptions.
• Enhanced error handling by adding a try-except block to catch SyntaxError exceptions and raise a ValueError with a descriptive message.
• Improved the logic for checking class inheritance by iterating through the bases of class definitions and checking for inheritance from Component or LC. This can be improved to a more generic solution but it fixes the problem for now

[codspeed-hq]

CodSpeed Performance Report

Merging #4492 will degrade performances by 12.94%

_{Comparing fix-class-eval (a295b5b) with main (357c587)}

Summary

⚡ 2 improvements
❌ 1 regressions
✅ 12 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	fix-class-eval	Change
❌	test_invalid_run_with_input_type_chat	16.5 ms	18.9 ms	-12.94%
⚡	test_successful_run_with_input_type_text	527.2 ms	429.2 ms	+22.83%
⚡	test_successful_run_with_output_type_debug	449.7 ms	405.4 ms	+10.93%