[Accton][minipack3bta] Fix minipack3bta agent config: add sai_eapol_trap_use_bcast_mac

[brandonchen-accton]

Summary

Pre-submission checklist

• I've ran the linters locally and fixed lint errors related to the files I modified in this PR. You can install the linters by running pip install -r requirements-dev.txt && pre-commit install
• pre-commit run

clang-format.........................................(no files to check)Skipped
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trim trailing whitespace.................................................Passed
fix end of files.........................................................Passed
check yaml...........................................(no files to check)Skipped
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check for merge conflicts................................................Passed
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Prevent sai_impl in fboss manifest.......................................Passed

Test Plan

In the test AgentCoppEapolTest/0.EapolToHighPriQ, EAPOL packets were not being trapped to the CPU. To resolve this, we enabled sai_eapol_trap_use_bcast_mac=1 in the SDK to support trapping broadcast MAC EAPOL packets to the CPU.

[meta-codesync]

@ravi861 has imported this pull request. If you are a Meta employee, you can view this in D110272610.