Support latest version of @modelcontextprotocol/server-everything package #1149
Description
Some tests in ClientIntegrationTests run the MCP server provided by @modelcontextprotocol/server-everything. Prior to the version being pinned in #1077, these tests always ran using the latest available version of the package. However, the most recent release (2026.1.14) has some breaking changes that caused many of the tests in ClientIntegrationTests to fail. Some of these breaks are simple renames (e.g., simple_prompt to simple-prompt), but others are slightly more involved (complex_prompt with temperature/style args to args-prompt with city/state args).
We should consider updating these tests to be compatible with the latest version of server-everything. This may also include updating ModelContextProtocol.TestServer as well.