fix(sdk): tolerate orphaned tool observations

[jstar0]

HUMAN:

---

AGENT:

Why

ToolCallMatchingProperty.manipulation_indices raised KeyError when crash recovery left an observation-like event without its matching action. This could permanently prevent a conversation from continuing after restart recovery.

Summary

• Ignore observations whose tool_call_id has no action in the current view.
• Preserve strict duplicate-observation detection for tool calls that do have a matching action.
• Add property-level and View-level regression coverage.

Issue Number

Fixes #4591

How to Test

• uv run pytest tests/sdk/context/view
• uv run pre-commit run --files openhands-sdk/openhands/sdk/context/view/properties/tool_call_matching.py tests/sdk/context/view/properties/test_tool_call_matching.py tests/sdk/context/view/test_view_manipulation_indices.py

The focused view suite passes 150 tests. The regression tests cover both an orphaned AgentErrorEvent and a duplicate observation; the latter remains a strict pairing error.

Video/Screenshots

Not applicable for this SDK-only behavior fix. The regression is covered by deterministic tests using an in-memory event sequence.

Type

• Bug fix
• Feature
• Refactor
• Breaking change
• Docs / chore

Notes

This change does not alter persisted event formats or public APIs.