Revert "Migrate ubsan config_setting to new unified constraint."

[rascani]

Reverts #16529

Needs to be landed as 3 separate PRs.

[pytorch-bot]

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❌ 2 New Failures, 1 Unrelated Failure

As of commit 5203b9a with merge base dbf3c37 ():

NEW FAILURES - The following jobs have failed:

• pull / test-samsung-models-linux / linux-job (gh)
  test_inception_v4_fp16
• Test CUDA Builds / test-model-cuda-e2e (mistralai, Voxtral-Mini-3B-2507, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t 0195edf7898c49317e1d16f9f97b9872d4b65f955f454caf7b8e75d1346e6c45 /exec failed with exit code 1

UNSTABLE - The following job is marked as unstable, possibly due to flakiness on trunk:

• pull / android / run-emulator (gh) (#16137)
  Timeout waiting for emulator to boot.

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