decompose con1d to conv2d for cuda backend

[pytorchbot]

This PR was created by the merge bot to help merge the original PR into the main branch.
ghstack PR number: #15017 by @Gasoonjia
^ Please use this as the source of truth for the PR details, comments, and reviews
ghstack PR base: https://github.com/pytorch/executorch/tree/gh/gasoonjia/58/base
ghstack PR head: https://github.com/pytorch/executorch/tree/gh/gasoonjia/58/head
Merge bot PR base: https://github.com/pytorch/executorch/tree/main
Merge bot PR head: https://github.com/pytorch/executorch/tree/gh/gasoonjia/58/orig
Differential Revision: D84296877
@diff-train-skip-merge

[pytorch-bot]

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❌ 1 New Failure, 5 Pending, 5 Unrelated Failures

As of commit 9738edc with merge base 50f96a0 ():

NEW FAILURE - The following job has failed:

• Lint / android-java-format / linux-job (gh)
  RuntimeError: Command docker exec -t f0e11d8b19cb924a3bb89d1f910be748afb9c70529e943aaa1c7b0b19ace20ac /exec failed with exit code 1

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• pull / test-llama-runner-linux (fp32, xnnpack+custom+quantize_kv, linux.arm64.2xlarge, executorch-ubuntu... / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• pull / test-models-linux-basic (vit, portable, cmake, linux.2xlarge, executorch-ubuntu-22.04-clang12) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• pull / test-vulkan-models-linux / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / windows / windows-job (gh) (trunk failure)
  runtime/test/test_runtime_etdump_gen.py::RuntimeETDumpGenTest::test_etdump_params_with_bytes_and_buffer
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  runtime/test/test_runtime_etdump_gen.py::RuntimeETDumpGenTest::test_etdump_params_with_bytes_and_buffer

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