Flame graphs can include Memray code

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

The example flamegraph for the nbody problem includes a Memray private function.

### Expected Behavior

We should be filtering out every symbol from the Memray DSO so that our hooks don't show up in the reports.

### Steps To Reproduce

https://bloomberg.github.io/memray/_static/flamegraphs/memray-flamegraph-nbody.html#13521

### Memray Version

main

### Python Version

3.11

### Operative System

Linux

### Anything else?

_No response_

The issue names no source file or test; start with the linked nbody flamegraph and trace how its symbols are produced and filtered. Done means the report no longer contains any symbol from the Memray DSO, including the private function shown in the example.

Written by the indexing model from the issue text.