fix: incremental updates on trace view spans

[cristipufu]

Description

This pull request implements incremental updates for the trace view spans instead of rebuilding the entire tree on every trace message. The change improves UI performance by only updating affected nodes when trace messages arrive, particularly important for applications with many trace spans.

Changes:

• Replaced full tree rebuilds on each trace message with incremental updates that only modify affected nodes
• Added orphan tracking to handle OpenTelemetry export ordering where child spans complete before their parents
• Introduced caching for TreeNodes, TraceMessages, and labels to optimize lookups and detect changes

Development Package

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

[project]
dependencies = [
  # Exact version:
  "uipath-dev==0.0.21.dev1000390107",

  # Any version from PR
  "uipath-dev>=0.0.21.dev1000390000,<0.0.21.dev1000400000"
]

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

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