Ignore lateinitialize for owner field in group resource

[turkenf]

Description of your changes

This PR ignores late-initialize for owner field in group resource to avoid

I have:

• [x] Read and followed Crossplane's contribution process.
• [x] Run make reviewable to ensure this PR is ready for review.
• [ ] ~Added backport release-x.y labels to auto-backport this PR if necessary.~

How has this code been tested

Uptest: https://github.com/crossplane-contrib/provider-upjet-azuread/actions/runs/11683308033

[turkenf]

/test-examples="examples/groups/v1beta1/group.yaml"

[turkenf]

/test-examples="examples/groups/v1beta2/group.yaml"