Publish to azure samples browser - sample ingestion failure

## Description

Sample ingestion failure: According to `.samples-status.json`, the ingestion failed for `README.md` because the referenced image file `architecture-diagram.png` could not be found:

> Fail to copy media files from path: architecture-diagram.png. Source file does not exist.

https://github.com/MicrosoftDocs/samples/blob/main/Azure-Samples/remote-mcp-functions-javascript/.samples-status.json

## Expected behavior
All media files referenced by `README.md` should exist in the repository at the expected paths so that the sample can be ingested successfully.

CC @lilyjma, @hemarina

Start with README.md and .samples-status.json to confirm the architecture-diagram.png reference and the expected media path. Check the repository for the referenced image, then correct the missing media reference or restore the expected file so all README media can be found and sample ingestion succeeds.

Vom Indexierungsmodell aus dem Issue-Text verfasst.