fix: add polling for resumable runtimes

[cristipufu]

Add polling support for suspended executions in debug runtime

Changes

• Add trigger polling to UiPathDebugRuntime when delegate is UiPathResumableRuntime
• Poll resume triggers at configurable intervals until data is available: trigger_poll_interval parameter (default: 5.0s, set to 0 to disable)
• Auto-resume execution when trigger data becomes ready
• Emit polling events (<polling>, <suspended>, <resumed>) to debug bridge for visibility
• Support quit during polling via race between sleep and debug bridge signals

Behavior

When execution suspends with a resume trigger (e.g., HITL actions), the debug runtime now:

1. Emits suspension state to debug bridge
2. Polls trigger using trigger_manager.read_trigger()
3. Waits for poll interval OR quit command (whichever comes first)
4. Auto-resumes execution when data is available
5. Continues streaming events through the debug bridge

Development Package

• Add this package as a dependency in your pyproject.toml:

[project]
dependencies = [
  # Exact version:
  "uipath-runtime==0.0.9.dev1000170072",

  # Any version from PR
  "uipath-runtime>=0.0.9.dev1000170000,<0.0.9.dev1000180000"
]

[[tool.uv.index]]
name = "testpypi"
url = "https://test.pypi.org/simple/"
publish-url = "https://test.pypi.org/legacy/"
explicit = true

[tool.uv.sources]
uipath-runtime = { index = "testpypi" }