Add telemetry support for condition input and output in edge group conditions

Description

Currently, telemetry in the Microsoft Agent Framework does not capture condition input and output for edge group conditions.
This makes it hard to debug agent routing — especially when loops or multiple routes are evaluated based on conditions.

Proposed Solution

Add telemetry to log:

• Condition Input: values passed into the condition
• Condition Output: the evaluation result (true/false or computed result)

Example:

{
  "event": "ConditionEvaluated",
  "conditionInput": { "customerType": "premium" },
  "conditionOutput": true,
  "selectedEdge": "PremiumAgentRoute"
}

Benefit

Improves observability and debugging by showing why a specific route or agent was selected.