Agent not updating the test suites and the build and release yaml files

### Description

The agent is doing a pretty good job, but the test suites are not getting updated in a single go, we have to explicitly mention about it and also the build and release yaml files associated to the solution are also not getting updated.

Start by tracing the agent workflow that updates solution files and identify how it discovers test suites and the associated build and release YAML files. Reproduce the case where these files are omitted unless explicitly requested. Done means one agent run updates the relevant test suites and build and release YAML files without an additional instruction.

Written by the indexing model from the issue text.