onnxruntime

18282b1e - [QNN EP] Revert workarounds for problems in old QNN versions (#25171)

[QNN EP] Revert workarounds for problems in old QNN versions (#25171) ### Description * Re-enable tests and remove workarounds that were introduced as part of a QNN <= 2.31 upgrade but are no longer necessary. ### Motivation and Context QNN/QAIRT releases about once a month. As ONNX Runtime adopts these new versions, some number of tests are often found to be impacted. Consequently, tests are skipped and tolerances are loosened. This change reverts as many of those workarounds as possible that were made for QNN upgrades between 2.17 and 2.31, inclusive. The most recent few releases were intentionally not examined to minimize impact on users on old versions and to avoid lock-in to the bleeding edge. --------- Co-authored-by: Jeff Kilpatrick <jkilpat@qti.qualcomm.com>