forward fix unit test

[cccclai]

Summary:
Forward fix test failure in #15807

Main reason is that this API is called internally. In this PR, I recovered some of the deleted functions in the previous PRs

Differential Revision: D87566729

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@cccclai has exported this pull request. If you are a Meta employee, you can view the originating Diff in D87566729.

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❌ 4 New Failures

As of commit 69214d6 with merge base 92bf722 ():

NEW FAILURES - The following jobs have failed:

• Lint / lintrunner / linux-job (gh)
  >>> Lint for backends/qualcomm/quantizer/custom_annotation.py:
• pull / unittest / linux / linux-job (gh)
  exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module
• pull / unittest / macos / macos-job (gh)
  export/tests/test_target_recipes.py::TestTargetRecipes::test_mv3_model
• pull / unittest-editable / linux / linux-job (gh)
  exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module

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[cccclai]

not needed