feat: enhance Anthropic component UI and validation

[viniciossilva3]

The following improvements were made to the Anthropic component:

• Made API key field required to ensure proper configuration
• Replaced FloatInput with SliderInput for temperature parameter to improve user experience
• Added step control (0.01) for more precise temperature adjustments

This pull request focuses on updating the requirements for inputs in the AnthropicModelComponent and related configurations. The key changes include making the api_key a required input and ensuring that this requirement is reflected in the initial setup for starter projects.

Updates to input requirements:

• src/backend/base/langflow/components/models/anthropic.py: The api_key input is now marked as required in the AnthropicModelComponent.

Changes in initial setup configuration:

• src/backend/base/langflow/initial_setup/starter_projects/Custom Component Maker.json: Added api_key to the list of required inputs for the model_output component.
• src/backend/base/langflow/initial_setup/starter_projects/Custom Component Maker.json: Updated the required field for the api_key input to true.
• src/backend/base/langflow/initial_setup/starter_projects/Custom Component Maker.json: Updated the default code value for the AnthropicModelComponent to include the required attribute for the api_key input.

[codspeed-hq]

CodSpeed Performance Report

Merging #5690 will degrade performances by 31.27%

_{Comparing viniciossilva3:feature/anthropic-improvements (fc0fd67) with main (88111c3)}

Summary

❌ 2 regressions
✅ 13 untouched benchmarks

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

Benchmarks breakdown

	Benchmark	main	viniciossilva3:feature/anthropic-improvements	Change
❌	test_successful_run_with_input_type_text	175.5 ms	253 ms	-30.64%
❌	test_successful_run_with_output_type_debug	173.7 ms	252.7 ms	-31.27%

[edwinjosechittilappilly]

This Could break the agents

Latest updated changes Refer PR: #5720

[edwinjosechittilappilly]

Thank you @carlosrcoelho for tagging me!

[edwinjosechittilappilly]

LGTM

[anovazzi1]

lgtm