Fix client tool name mismatch for callees/callers

[bsamuels453]

The MCP client was calling "function_callees" and "function_callers" but the tools are registered as "get_function_callees" and "get_function_callers" in the tool registry. This mismatch caused validation warnings and would fail when using the client.

Description

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Related Issues

Fixes #(issue number)
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Type of Change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Performance improvement
• Code refactoring
• Test improvements

Testing

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• All existing tests pass (uv run pytest)
• Added new tests for new functionality
• Tested manually with example Solidity projects
• Verified backwards compatibility

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation (README, docstrings, etc.)
• My changes generate no new warnings or linter errors
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published

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[Copilot]

Pull request overview

This PR fixes a critical bug where the MCP client was calling tools with incorrect names ("function_callees" and "function_callers") while the server registered them with "get_" prefixes ("get_function_callees" and "get_function_callers"). This mismatch would cause tool validation warnings and failures when using the client.

Changes:

• Updated tool name from "function_callees" to "get_function_callees" in mcp_client.py
• Updated tool name from "function_callers" to "get_function_callers" in mcp_client.py
• Bumped version from 2.3.1 to 2.3.2 (patch version for bug fix)

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
slither_mcp/client/mcp_client.py	Fixed tool names in _call_tool() invocations to match registered tool names in the tool registry
slither_mcp/init.py	Bumped package version to 2.3.2
pyproject.toml	Bumped package version to 2.3.2

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