Fix: forward modelCapabilities in Node.js resumeSession path

Addresses Cross-SDK Consistency Review:
- Add modelCapabilities to ResumeSessionConfig Pick list
- Forward modelCapabilities in session.resume RPC call

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: SteveSandersonMS

nodejs/src/client.ts

@@ -848,6 +848,7 @@ export class CopilotClient {
                     description: cmd.description,
                 })),
                 provider: config.provider,
+                modelCapabilities: config.modelCapabilities,
                 requestPermission: true,
                 requestUserInput: !!config.onUserInputRequest,
                 requestElicitation: !!config.onElicitationRequest,

nodejs/src/types.ts

@@ -1217,6 +1217,7 @@ export type ResumeSessionConfig = Pick<
     | "availableTools"
     | "excludedTools"
     | "provider"
+    | "modelCapabilities"
     | "streaming"
     | "reasoningEffort"
     | "onPermissionRequest"