fix(core): add 'number' schema type mapping to fix float parameter loading

[anubhav756]

Description

This PR adds support for the standard JSON Schema "number" type.

Context

Following the server's correction to emit standard "type": "number" for floating-point parameters in MCP manifests, the client failed to load any tools containing float parameters.

Changes

• Maps the standard "number" type to Python's built-in float type.
• Retains the "float" mapping for backward compatibility with any legacy tool configs.
• Adds a comprehensive replication unit test.

Checklist

• Make sure to open an issue as a bug/issue before writing your code!
• Ensure the tests and linter pass
• Code coverage does not decrease
• Appropriate docs were updated (N/A - Docs are already correct)
• Make sure to add ! if this involves a breaking change (N/A - Backward-compatible fix)

Issue Reference

Fixes #649 🦕