[BUG] Telemetry policy says no error messages collected, but code sends error messages

[singe]

Describe the bug
The telemetry collection code and telemetry collection statements are at odds with each other.

The telemetry policy states:

What We Track
We collect only very basic usage data including:
Session Errors: Duration and error types (not messages or stack traces)

strix/strix/telemetry/README.md

Line 15 in 7141ccf

**Session Errors:** Duration and error types (not messages or stack traces)\

However, the code clearly collects error messages at:

strix/strix/interface/main.py

Line 825 in 7141ccf

posthog.error("unhandled_exception", str(e))

strix/strix/interface/main.py

Line 826 in 7141ccf

scarf.error("unhandled_exception", str(e))

Either remove support for collecting error message at all (my preference), or update the Telemetry policy to note that you now collect unhandled exceptions and their associated error message string.