chore: fix bundled example not loading application.properties

[davsclaus]

Summary

• When running camel run --example groovy, the example's application.properties was extracted to a temp directory but profileProperties was loaded from the current working directory (.), so camel.jbang.dependencies and other properties were never picked up by the runtime.
• Fixed by setting exportBaseDir = tempDir in runBundledExample() so run() uses the temp directory as baseDir, making loadProfileProperties find the correct application.properties.

Test plan

• Run camel run --example groovy --verbose and verify commons-validator:commons-validator:1.10.1 is resolved and the example runs without errors
• Full reactor build passes (mvn clean install -DskipTests)

Claude Code on behalf of Claus Ibsen

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🧪 CI tested the following changed modules:

• docs
• dsl/camel-jbang/camel-jbang-core

⚠️ Some tests are disabled on GitHub Actions (@DisabledIfSystemProperty(named = "ci.env.name")) and require manual verification:

• dsl/camel-jbang/camel-jbang-core: 1 test(s) disabled on GitHub Actions

💡 Manual integration tests recommended:

You modified dsl/camel-jbang/camel-jbang-core. The related integration tests in dsl/camel-jbang/camel-jbang-it are excluded from CI. Consider running them manually:

mvn verify -f dsl/camel-jbang/camel-jbang-it -Djbang-it-test

All tested modules (6 modules)

• Camel :: JBang :: Core
• Camel :: JBang :: MCP
• Camel :: JBang :: Plugin :: Route Parser
• Camel :: JBang :: Plugin :: TUI
• Camel :: JBang :: Plugin :: Validate
• Camel :: Launcher :: Container

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