Enable glam asserts in debug builds

[emilk]

What

From https://docs.rs/glam/latest/glam/#glam-assertions:

glam does not enforce validity checks on method parameters at runtime. For example methods that require normalized vectors as input such as Quat::from_axis_angle(axis, angle) will not check that axis is a valid normalized vector. To help catch unintended misuse of glam the debug-glam-assert or glam-assert features can be enabled to add checks ensure that inputs to are valid.

Checklist

• I have read and agree to Contributor Guide and the Code of Conduct
• I've included a screenshot or gif (if applicable)
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  • Using examples from latest main build: rerun.io/viewer
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• The PR title and labels are set such as to maximize their usefulness for the next release's CHANGELOG
• If applicable, add a new check to the release checklist!
• If have noted any breaking changes to the log API in CHANGELOG.md and the migration guide

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