Disable ansi colors for `tracing_tracy`

## What problem does this solve or what need does it fill?

When profiling using tracy the colors are not rendered and instead obfuscate the span names instead.

## What solution would you like?

The ideal solution would be to have this problem be solved in `rust_tracy_client`, but as a short term solution documenting that setting `NO_COLOR` makes tracy names much cleaner could work. Another solution would be to maybe add a layer filter to the tracy layer that removes the color values.

## What alternative(s) have you considered?

Right now I just set `NO_COLOR` whenever I need to do profiling.

## Additional context

Issue in `rust_tracy_client`: https://github.com/nagisa/rust_tracy_client/issues/123


Start by reading the tracing_tracy integration and the linked rust_tracy_client issue. Compare Tracy span names with and without NO_COLOR, then determine whether the fix belongs in this repository or upstream. Done means Tracy profiling no longer shows ANSI color sequences in span names without relying on a manual environment setting.

Written by the indexing model from the issue text.