fix: update McpSchemaTests to align with changes in #9

Signed-off-by: Christian Tzolov <[email protected]>

Author: tzolov

Diff for: mcp/src/test/java/io/modelcontextprotocol/spec/McpSchemaTests.java

@@ -536,7 +536,7 @@ void testCreateMessageRequest() throws Exception {
 			.isObject()
 			.isEqualTo(
 					json("""
-							{"messages":[{"role":"user","content":{"type":"text","text":"User message"}}],"modelPreferences":{"hints":[{"name":"gpt-4"}],"costPriority":0.3,"speedPriority":0.7,"intelligencePriority":0.9},"systemPrompt":"You are a helpful assistant","includeContext":"this_server","temperature":0.7,"maxTokens":1000,"stopSequences":["STOP","END"],"metadata":{"session":"test-session"}}"""));
+							{"messages":[{"role":"user","content":{"type":"text","text":"User message"}}],"modelPreferences":{"hints":[{"name":"gpt-4"}],"costPriority":0.3,"speedPriority":0.7,"intelligencePriority":0.9},"systemPrompt":"You are a helpful assistant","includeContext":"thisServer","temperature":0.7,"maxTokens":1000,"stopSequences":["STOP","END"],"metadata":{"session":"test-session"}}"""));
 	}
 
 	@Test