Fix testResumeSessionWithNewClient by keeping first client alive during session resume

[Copilot]

The testResumeSessionWithNewClient test was failing with "Session not found" because client1 closed before client2 attempted to resume the session. When client1's try-with-resources block exited, it killed the CLI process, destroying the session.

Changes

• Nested client2's try-with-resources block inside client1's block
• Both CLI processes now remain active during session resumption
• Aligns with Node.js and Go SDK test patterns

Before:

try (CopilotClient client1 = ctx.createClient()) {
    CopilotSession session1 = client1.createSession().get();
    sessionId = session1.getSessionId();
    // ... use session
}  // client1 closes here, killing CLI process and destroying session

try (CopilotClient client2 = ctx.createClient()) {
    CopilotSession session2 = client2.resumeSession(sessionId).get();  // Fails: Session not found
}

After:

try (CopilotClient client1 = ctx.createClient()) {
    CopilotSession session1 = client1.createSession().get();
    sessionId = session1.getSessionId();
    // ... use session
    
    try (CopilotClient client2 = ctx.createClient()) {
        CopilotSession session2 = client2.resumeSession(sessionId).get();  // Works: session still exists
    }
}  // Both clients close after session resumption completes

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• checkstyle.org
  • Triggering command: /opt/hostedtoolcache/CodeQL/2.24.0/x64/codeql/tools/linux64/java/bin/java /opt/hostedtoolcache/CodeQL/2.24.0/x64/codeql/tools/linux64/java/bin/java -jar /opt/hostedtoolcache/CodeQL/2.24.0/x64/codeql/xml/tools/xml-extractor.jar --fileList=/home/REDACTED/work/copilot-sdk-java/.codeql-scratch/dbs/java/working/files-to-index18304746519990065774.list --sourceArchiveDir=/home/REDACTED/work/copilot-sdk-java/.codeql-scratch/dbs/java/src --outputDir=/home/REDACTED/work/copilot-sdk-java/.codeql-scratch/dbs/java/trap/java (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Fix the failing GitHub Actions workflow Java SDK Tests
Analyze the workflow logs, identify the root cause of the failure, and implement a fix.
Job ID: 61897996428
Job URL: https://github.com/copilot-community-sdk/copilot-sdk-java/actions/runs/21486746051/job/61897996428

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