Wgpu-dependency tests fail on dev dependencies

[SupaMaggie70Incorporated]

Description
The tests read directly from the output of cargo tree, which and fail if e.g. wgpu for webgpu uses naga as a dev dependency

Repro steps
Look at CI failures on #8217

Expected vs observed behavior
We should be using a more structured dependency check, such as from cargo_metadata

[cwfitzgerald]

We should be able to add -e normal to have it exclude dev dependencies

[SupaMaggie70Incorporated]

We should be able to add -e normal to have it exclude dev dependencies

@cwfitzgerald Should we include build dependencies here as well? At the moment I don't think there's a reason not to

[cwfitzgerald]

Yeah we should, as those end up in the final build.

[SupaMaggie70Incorporated]

It looks like I misunderstood the problem; the crate that it was complaining about was a proc-macro crate, which is technically considered a normal dependency, so this doesn't address that. But I've updated the code to ignore dev-dependencies for now anyway, and addressed the actual problem elsewhere. Probably this can be closed then