feat: add build test for orbit apps

[alihm]

Summary

Added a testappinstall/{hash} step to the Orbit (Git) registration flow, matching the existing behavior in Docker deployments (apps/register/configure).

After the user signs the message and the app is registered on the network, a test installation is now automatically run before proceeding to payment. If the test passes, the flow auto-advances to the payment step. If it fails, the user can retry, edit their configuration, or force-enable payment.

Changes

• Auto-run test after registration: propagateSignedMessage() now calls testAppInstall() instead of skipping directly to payment
• Test UI in Step 5 (Register): Shows streaming test progress with a collapsible log viewer and status icons
• Failure handling: On test failure, provides Retry, Enable Payment Anyway, and Edit Configuration actions
• State management: Test state (testRunning, testError, testOutput) is fully reset when the user goes back and changes specs or re-signs

File Changed

• src/pages/apps/register/orbit.vue