test_operator_gpu.test_bilinear_sampler_with_type has fixed seed that can mask flakiness

[szha]

The unit test in title have been using fixed seed to mask flakiness. Suggested action:

1. Evaluate whether the test is flaky without fixed seed. If not, remove seed. Else move to 2
2. If test is flaky, determine whether it's an actual uncaught edge case. If so, fix the operator. Else move to 3
3. If numerical instability is inevitable, adjust tolerance level appropriately.

[apeforest]

Thannks for filing this issue. We will investigate this Flaky test

[nswamy]

ran the test 100K on CPU, no issue on CPU. Running on GPU fails after 5-10 iterations. Identifying which dType causes the test to fail in DEBUG mode.