stacks: preserve the required components and component inputs in the state #35650
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This PR adds the required components and component inputs to the state preserved by stacks for the components.
This will be used by the removed blocks to work out the correct order of operations during apply operations, and to set the input variables for terraform core during destroy operations.
Normally, these values are computed during the planning operation but for removed blocks we lose any references and connections as a result of the inputs no longer being provided. To counter this, we preserve the values from the last apply operation which can then be used to remove everything.