affine3_extension_trait.md

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title: Methods of `Affine3` `to_transpose` and `inverse_transpose_3x3` are now part of an extension trait
pull_requests: [22681]

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With the addition of Affine3 on glam, Bevy's version was removed, to keep the functionalities that the Bevy version provided the extension trait Affine3Ext was created. Locations that used to access Affine3::to_transpose or Affine3::inverse_transpose_3x3 will now require that the extension be in scope.