[Throwaway POC] Potential fix for supportsVision undefined

[jruales]

I was seeing issues like TypeError: Cannot read properties of undefined (reading 'supportsVision') in logs when running local evals, so I asked Copilot to investigate and it suggested this fix. I asked copilot to come up with a PR description, and this is what it said:

---

Title: Fix crash in sendInvokedToolTelemetry when tool result contains images

Description:

When a tool (e.g. view_image) returns an image in its result, sendInvokedToolTelemetry crashes with:

TypeError: Cannot read properties of undefined (reading 'supportsVision')

Root cause: sendInvokedToolTelemetry creates a bare BasePromptRenderer to count tokens, but does not register IPromptEndpoint in the DI container. When the tool result contains a LanguageModelDataPart image, PrimitiveToolResult.render() calls onImage(), which accesses this.endpoint.supportsVision — but this.endpoint is undefined because it was never injected.

Fix: Filter out image data parts before passing the tool result content to PrimitiveToolResult. Image blobs are binary data that don't contribute to meaningful token counts, so they should be excluded from this telemetry path.Continued with Autopilot

Provided the PR title and description as requested.