[QNN EP] Fix pool and conv op tests (#15504)
### Description
- Fixes QNN unit tests for pool and conv ops.
- Temporarily disables QNN Resize tests until we fix type/shape
inferencing for NHWC Resize.
### Motivation and Context
The Linux QNN CI Pipeline has not run unit tests for a week (see
https://github.com/microsoft/onnxruntime/pull/15497). Some tests broke
in the meantime.
Fixed
[AB#14625](https://aiinfra.visualstudio.com/6a833879-cd9b-44a4-a9de-adc2d818f13c/_workitems/edit/14625)
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Co-authored-by: Changming Sun <chasun@microsoft.com>
