Update otlp integration testdata

In https://github.com/grafana/pyroscope/pull/4212 we skip some testdata.

1. We should regenerate at least some of them.
2. We should add a new testdata from asprof

Start by reviewing pull request #4212 and the OTLP integration testdata it skipped. Identify which testdata can be regenerated and how the repository creates it, then determine the expected format for adding an asprof fixture. Done means the selected fixtures are regenerated and the new asprof testdata is covered by the integration tests.

Written by the indexing model from the issue text.