refactor: Calculator Component updating tool implementation and fix deprecation warnings

[Vigtu]

refactor(calculator): update tool implementation and fix deprecation warnings

• Replace legacy tool mode implementation using CalculatorToolSchema with simplified tool_mode=True approach.
• Fix ast.Num deprecation warnings by supporting ast.Constant while maintaining backwards compatibility.

This pull request includes the addition of a new CalculatorComponent and the deprecation of the existing CalculatorToolComponent. The changes involve updating the initialization file to include the new component, modifying the old component to mark it as deprecated, and adding comprehensive unit tests for the new component.

Addition of new CalculatorComponent:

• src/backend/base/langflow/components/tools/__init__.py: Added CalculatorComponent to the import list and component registry. [1] [2]
• src/backend/base/langflow/components/tools/calculator_core.py: Implemented the new CalculatorComponent with a complete evaluation function using AST parsing for arithmetic operations.

Deprecation of existing CalculatorToolComponent:

• src/backend/base/langflow/components/tools/calculator.py: Marked the CalculatorToolComponent as deprecated by changing its display_name and adding a legacy attribute.

Unit tests for CalculatorComponent:

• src/backend/tests/unit/components/tools/test_calculator.py: Added unit tests to validate the functionality of the new CalculatorComponent, including tests for basic and complex calculations, division by zero, invalid expressions, unsupported operations, and frontend node generation.

[Vigtu]

@carlosrcoelho

[edwinjosechittilappilly]

LGTM

[edwinjosechittilappilly]

Ensure to have Name variable in component such that it would be used in the Edit tools table later.

[codspeed-hq]

CodSpeed Performance Report

Merging #5442 will degrade performances by 32.87%

_{Comparing Vigtu:calculator-overhaul (bf0e59f) with main (3193804)}

Summary

⚡ 1 improvements
❌ 1 regressions
✅ 13 untouched benchmarks

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

Benchmarks breakdown

	Benchmark	main	Vigtu:calculator-overhaul	Change
⚡	test_successful_run_with_input_type_text	4,243.8 ms	249.4 ms	×17
❌	test_successful_run_with_output_type_debug	167.3 ms	249.3 ms	-32.87%

[edwinjosechittilappilly]

@Vigtu can you check and fix why the unit test are failing?

[Vigtu]

@Vigtu can we get these changes in by Today (friday) ? Please let me know if there are any blockers!

Done

[edwinjosechittilappilly]

LGTM