[Form Recognizer] png file stream failing in nightly runs

[jerryshia]

Form Recognizer nightly test runs are failing with:

Stack trace:
expected undefined to equal '34278587'
AssertionError: expected undefined to equal '34278587'
at validateSpec (file:///Users/runner/work/1/s/sdk/formrecognizer/ai-form-recognizer/test/utils/fieldValidator.ts:63:12)
at validateObjectSpec (file:///Users/runner/work/1/s/sdk/formrecognizer/ai-form-recognizer/test/utils/fieldValidator.ts:104:5)
at validateSpec (file:///Users/runner/work/1/s/sdk/formrecognizer/ai-form-recognizer/test/utils/fieldValidator.ts:88:7)
at validateSpec (file:///Users/runner/work/1/s/sdk/formrecognizer/ai-form-recognizer/test/utils/fieldValidator.ts:81:7)
at validateObjectSpec (file:///Users/runner/work/1/s/sdk/formrecognizer/ai-form-recognizer/test/utils/fieldValidator.ts:104:5)
at file:///Users/runner/work/1/s/sdk/formrecognizer/ai-form-recognizer/test/utils/fieldValidator.ts:164:5
at Context. (file:///Users/runner/work/1/s/sdk/formrecognizer/ai-form-recognizer/test/public/node/analysis.spec.ts:427:9)
at processTicksAndRejections (node:internal/process/task_queues:105:5)

For more details check here:
https://dev.azure.com/azure-sdk/internal/_build/results?buildId=4155020&view=results

[github-actions]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @ctstone @vkurpad.