Asset loading fails when using cargo flamegraph

## Bevy version

0.10.1

## What you did

1. Created a project that requires asset loading. In this case, [this commit](https://github.com/Leafwing-Studios/Emergence/commit/95ca0a816f2f9ca0cc1634714aa1bb3a2af085db) of Emergence.
2. Verify that the game works in `cargo run --release`.
3. Use the [`flamegraph`](https://github.com/flamegraph-rs/flamegraph) cargo tool linked [here](https://github.com/bevyengine/bevy/blob/main/docs/profiling.md#perf-runtime-flame-graph) by calling ` cargo flamegraph --bin=emergence_game`.

## What went wrong

Assets failed to load, and thus the game never started.

## Additional information

This might be an incompatibility between `bevy_tasks` and whatever `flamegraph` is doing?

Reproduce the asset-loading project from the linked Emergence commit with Bevy 0.10.1, comparing `cargo run --release` against `cargo flamegraph --bin=emergence_game`. Start with the flamegraph command and the profiling documentation; done means the game starts and loads assets under the flamegraph workflow.

Written by the indexing model from the issue text.