Backport of core: Add sensitive provider attrs to JSON plan into v0.15

[teamterraform]

Backport

This PR is auto-generated from #28523 to be assessed for backporting due to the inclusion of the label 0.15-backport.

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

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When rendering a stored plan file as JSON, we include a data structure representing the sensitivity of the changed resource values (#28201). Prior to this commit, this was a direct representation of the sensitivity marks applied to values via mechanisms such as sensitive variables, sensitive outputs, and the sensitive function.

This commit extends this to include sensitivity based on the provider schema. This is in line with the UI rendering of the plan, which considers these two different types of sensitivity to be equivalent.

Fixes #28522.

[codecov]

Codecov Report

Merging #28542 (e403444) into v0.15 (b808170) will decrease coverage by 0.01%.
The diff coverage is 62.16%.

Impacted Files	Coverage Δ
command/jsonplan/plan.go	33.33% <0.00%> (-0.72%)	⬇️
configs/configschema/marks.go	77.77% <77.77%> (ø)
terraform/evaluate.go	50.86% <100.00%> (-2.32%)	⬇️
terraform/node_resource_plan.go	96.11% <0.00%> (-1.95%)	⬇️
dag/marshal.go	63.49% <0.00%> (+1.58%)	⬆️
configs/configschema/implied_type.go	86.48% <0.00%> (+5.40%)	⬆️

[github-actions]

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