[xpu][test] Enable more UTs for Intel GPU.

[etaf]

This PR enables additional Inductor unit tests for Intel GPU. Due to the increased number of test cases, the number of runners has been extended from 8 to 12 to prevent CI timeouts.

cc @voznesenskym @penguinwu @EikanWang @jgong5 @Guobing-Chen @XiaobingSuper @zhuhaozhe @blzheng @wenzhe-nrv @jiayisunx @ipiszy @chenyang78 @kadeng @muchulee8 @amjames @chauhang @aakhundov @coconutruben

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⏳ 4 Pending, 1 Unrelated Failure

As of commit bb8e579 with merge base 39a70ce ():

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• inductor / inductor-test / test (inductor_torchbench, 2, 2, linux.g5.4xlarge.nvidia.gpu) (gh) (similar failure)
  shufflenet_v2_x1_0

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[jansel]

Failing tests?

[etaf]

Failing tests?

@jansel My apologies. I usually ensure all CI checks pass before requesting a review, but I updated the PR afterward. I will be more careful in the future.