fix(global_modifierset): Ensure air boundaries use invisible trans

[chriswmackey]

This is linked to this issue here:

https://discourse.ladybug.tools/t/airboundary-not-considered-fully-transparent-by-radiance/15191/

[github-actions[bot]]

:tada: This PR is included in version 1.44.1 :tada:

The release is available on:

• GitHub release
• v1.44.1

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