Prefix target_link_options_shared_lib with ExecuTorch

[swolchok]

I think we are getting build failures in the following PR (e.g., in QNN) because QNN has a copy/paste of this function that I changed to work differently. If this works out, we should namespace all our functions.

[swolchok]

Stack from ghstack (oldest at bottom):

• Use CMake EXPORT #8954
• Fix missing cmake_deps.toml dep from size_test to extension_data_loader #12744
• Don't build MmapDataLoader if sys/mman.h isn't available and we're not on Windows #12743
• Set up CMake build for extension/evalue_util #12691
• Build EXTENSION_DATA_LOADER with size_test #12678
• -> Prefix target_link_options_shared_lib with ExecuTorch #12667

[pytorch-bot]

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❗ 1 Active SEVs

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

• linux.aws.h100.8 instance is down, potentially longer queue on linux.aws.h100

❌ 2 New Failures

As of commit 5173bf2 with merge base 56b0074 ():

NEW FAILURES - The following jobs have failed:

• Apple / build-demo-ios / macos-job (gh)
  RuntimeError: Command bash /Users/runner/work/_temp/exec_script failed with exit code 74
• pull / test-llava-runner-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 8c3effc67ffc2320f5004f35b32b64b87f600b991fc6c28b19778ed72f890ebf /exec failed with exit code 139

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