AI Studio extension QE coverage - part 2

[ScrewTSW]

Follow-up containers/podman-desktop-internal/issues/172

Epic domain

Implement AI Studio extension build from source, extend existing test with extension interaction, demo application deployment and verification

Consists of multiple steps

• [ ] Modify workflow to do extension build from source
• [x] Extend existing playwright scenario with handling Extension webview content
• [ ] Implement demo application installation and verification tests (all demo apps) using locally downloaded OpenSource model
• [x] E2E Tests are being run on Mac platform on nightly base

Additional context

No response