[denik]

Fix comments and docs left stale by the Terraform engine removal. No behaviour change.

• terraform_dabs_map, dresources/catalog, state_push, Bundle.Terraform (deprecated), telemetry proto comments
• bundle deployment migrate: comment on the engine env var, and the "no existing state" message no longer tells users to opt into direct (two goldens updated)
• selection tool example no longer uses the removed engine-matrix level
• docs/direct.md: migration backs up the remote state and renames the local tfstate; destroy removes all local state including the backup
• checkPlanOnTempState doc clarified; the code matches it (error is returned and fails the migration), so no code bug

Skipped: schema/python models (Bundle.Terraform is not in the schema, nothing to regenerate).

This pull request and its description were written by Isaac.

[eng-dev-ecosystem-bot]

Integration test report

Commit: 2167d67

Run: 37542436875

	Env	✅​pass	🙈​skip	Time
✅​	aws linux	276	18	6:06
✅​	aws windows	278	16	5:34
✅​	azure linux	275	18	5:49
✅​	azure windows	277	16	5:13
✅​	gcp linux	276	18	6:05
✅​	gcp windows	278	16	6:20

Top 6 slowest tests (at least 2 minutes):

duration	env	testname
3:54	azure linux	TestAccept
3:51	gcp linux	TestAccept
3:51	aws linux	TestAccept
3:08	azure windows	TestAccept
3:06	gcp windows	TestAccept
3:06	aws windows	TestAccept