[Copilot]

waitUntilDeleted previously treated every supplier exception as proof that a resource was gone. This could let cleanup continue after API or runtime failures, including checked ApiExceptions wrapped for use with Supplier.

• WaitUtils: Completes on a null result or an ApiException with HTTP status 404, including when wrapped. Other supplier exceptions surface immediately; status is determined by exception type and code, not message.
• ResourceClient: Propagates non-404 API failures instead of converting them to null, while preserving its checked ApiException contract.

WaitUtils.waitUntilDeleted(
    () -> {
      throw new RuntimeException(new ApiException(404, "Resource is gone"));
    },
    timeout);

• Fixes Do not treat arbitrary supplier failures as successful deletion in WaitUtils #4978

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: brendandburns / name: Brendan Burns (2ba8d0a, 51a2ada, 725db40)

[brendandburns]

/lgtm
/approve

[kubernetes-prow]

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