[Bug]: test_admin_tool_name_conflict creates record in actual db

[madhav165]

🐞 Bug Summary

Test test_admin_tool_name_conflict creates a tool of the format f"duplicate_tool_{uuid.uuid4().hex[:8]}" in application database instead of mock database

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🔁 Steps to Reproduce

1. Run make test on an existing application database
2. Run make serve and check tool list
3. Find tool with name starting with duplicate_tool_.

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🤔 Expected Behavior

Tests should use mock db, not actual db

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