fix(webapi): add grace period for transient error states#3212

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FXC-5149-cli-falsely-reports-fatal-error-when-backend-retries-task-and-later-succeedsflexcompute/tidy3d:FXC-5149-cli-falsely-reports-fatal-error-when-backend-retries-task-and-later-succeedsCopy head branch name to clipboard