Upgrade rmcp to 0.14 (#10718)

- [x] Upgrade rmcp to 0.14

codex-rs/exec-server/src/posix/mcp.rs

@@ -185,7 +185,7 @@ impl ServerHandler for ExecTool {
 
     async fn initialize(
         &self,
-        _request: InitializeRequestParam,
+        _request: InitializeRequestParams,
         _context: RequestContext<RoleServer>,
     ) -> Result<InitializeResult, McpError> {
         Ok(self.get_info())

codex-rs/exec-server/src/posix/mcp_escalation_policy.rs

@@ -4,7 +4,7 @@ use codex_core::sandboxing::SandboxPermissions;
 use codex_execpolicy::Policy;
 use rmcp::ErrorData as McpError;
 use rmcp::RoleServer;
-use rmcp::model::CreateElicitationRequestParam;
+use rmcp::model::CreateElicitationRequestParams;
 use rmcp::model::CreateElicitationResult;
 use rmcp::model::ElicitationAction;
 use rmcp::model::ElicitationSchema;
@@ -69,7 +69,8 @@ impl McpEscalationPolicy {
             .pause_for(async {
                 context
                     .peer
-                    .create_elicitation(CreateElicitationRequestParam {
+                    .create_elicitation(CreateElicitationRequestParams {
+                        meta: None,
                         message: format!(
                             "Allow agent to run `{command}` in `{}`?",
                             workdir.display()