BUG FIXES:
r/tfe_variable: Preserve or backfill resource identity on deleted-resource reads to avoid missing identity errors after remote deletion.r/tfe_project: Preserve or backfill resource identity on deleted-resource reads to avoid missing identity errors after remote deletion.r/tfe_stack: Preserve or backfill resource identity on deleted-resource reads and treat remotely deleted stacks as removed resources instead of read errors.