Backport of filter computed attrs from ignore_changes=all into v1.3

[ghost]

Backport

This PR is auto-generated from #31747 to be assessed for backporting due to the inclusion of the label 1.3-backport.

The below text is copied from the body of the original PR.

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When handling ignore_changes=all, we must filter computed attributes
from the prior state to prevent them showing in the configuration. Since
it's not valid for the user to have set computed attributes in the
config, the provider should expect to never see any values there. The
oversight has only now become apparent, as more providers adopt the
plugin-framework which has direct access to the plan-time configuration
value.

[github-actions]

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[github-actions]

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