[ET][Portable] Add op grid_sampler_2d

[manuelcandales]

This PR continues the work started by @DenisVieriu97 in PR#10561

[pytorch-bot]

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❗ 1 Active SEVs

There are 1 currently active SEVs. If your PR is affected, please view them below:

• Multiple CI trunk failures after landing https://github.com/pytorch/pytorch/pull/161002

❌ 3 New Failures

As of commit 441d021 with merge base b4e1145 ():

NEW FAILURES - The following jobs have failed:

• Build documentation / build (buck2) / Build doc (gh)
  At least one of the pre-conditions you specified did not hold
• pull / test-llava-runner-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 14d266bec157c4ce636e28d47debb8973d241b421ee61441b9f227809656641e /exec failed with exit code 139
• pull / unittest-arm-backend-with-no-fvp (test_pytest_ops) / linux-job (gh)
  RuntimeError: Command docker exec -t 16929da7f5b84f7f0fb7bd368678dd7f0bb7df5fb8e6582ca8c3cc8f3440f063 /exec failed with exit code 1

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@manuelcandales has imported this pull request. If you are a Meta employee, you can view this in D81164449.

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