Use EValue::tryTo*

[lucylq]

Use tryTo in:

• parseTensorList (tensor_parser_exec_aten.cpp) — called .toTensor()
  on each element index of a TensorList.
• parseListOptionalType (tensor_parser.h) — called .toOptional()
  on each element index of an OptionalTensorList.
• FreeCall instruction handler (method.cpp) — called .toTensor()
  on the value index being freed.

Unit tests cover parseTensorList and parseListOptionalType receiving
a non-matching EValue and expect Error::InvalidType.

Authored-with: Claude

[lucylq]

Stack from ghstack (oldest at bottom):

• Codegen: emit EValue::tryTo<T>() in boxed kernel wrappers #19041
• -> Use EValue::tryTo*  #19040
• Add tryTo evalue accessors #19039

[pytorch-bot]

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❌ 11 New Failures, 1 Pending

As of commit 36e811f with merge base 273888f ():

NEW FAILURES - The following jobs have failed:

• Lint / lintrunner (gh)
  >>> Lint for runtime/executor/method.cpp:
• pull / test-vulkan-operators-linux / linux-job (gh)
  undefined reference to executorch::runtime::Result<std::optional > executorch::runtime::EValue::tryTo<std::optional >() const[ 32%] Building CXX object kernels/portable/CMakeFiles/portable_kernels.dir/cpu/op_bitwise_xor.cpp.o`
• pull / unittest / linux / linux-job (gh)
  undefined reference to executorch::runtime::Result<std::optional > executorch::runtime::EValue::tryTo<std::optional >() const'`
• pull / unittest / macos / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 2
• pull / unittest / windows / windows-job (gh)
  Process completed with exit code 1.
• pull / unittest-arm-backend-with-no-deps (test_pytest_ops_tosa) / linux-job (gh)
  RuntimeError: Command docker exec -t 2f61c2b3c31c175491c02bb3f6b1f75f69f8fa78f4a819984a5c5037944838c7 /exec failed with exit code 1
• pull / unittest-buck / linux / linux-job (gh)
  RuntimeError: Command docker exec -t 32d9c4f526ba07dd61502394d97aeb48b0976d3b37f74fa070e0832074c45384 /exec failed with exit code 3
• pull / unittest-buck / macos / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 3
• pull / unittest-editable / linux / linux-job (gh)
  undefined reference to executorch::runtime::Result<std::optional > executorch::runtime::EValue::tryTo<std::optional >() const'`
• pull / unittest-editable / macos / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 2
• pull / unittest-editable / windows / windows-job (gh)
  Process completed with exit code 1.

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