Arm backend: Fix bug causing empty partition reports

[Erik-Lundell]

logger.level was used to determine whether to
add the partition_report.txt FileHandler to the logger. This value is not est by logging.setBasicConfig,
and defaults to 0. This caused empty reports to be output when intermediate path was set and logging was > info

Instead, use .getEffectiveLevel()

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218 @mansnils @Sebastian-Larsson @robell @rascani

[pytorch-bot]

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❌ 2 New Failures, 231 Pending, 1 Unrelated Failure

As of commit 83f1521 with merge base c72bc87 ():

NEW FAILURES - The following jobs have failed:

• Apple / build-frameworks-ios / macos-job (gh)
  RuntimeError: Command bash /Users/runner/work/_temp/exec_script failed with exit code 128
• pull / unittest-nxp-neutron / linux-job (gh)
  RuntimeError: Command docker exec -t 7ede8d409f29afbf259bc49f509df3f4f9591d49f3e4700876981e7e1b702a5c /exec failed with exit code 1

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• trunk / test-models-linux-aarch64 (emformer_transcribe, portable, linux.arm64.2xlarge) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

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