[Accton][MINIPACK3NM] Enable QSFP and LED service support for minipack3nm

[ec-michael-shih]

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

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Prevent sai_impl in fboss manifest.......................................Passed

Summary

Since the Minipack3n platform has migrated its COMe from the previous module to Netlake2 (AMD), the existing platform_manager.json is no longer compatible with the new CPU configuration.
To support this transition while maintaining system identity, a new platform name, minipack3nm, has been introduced.

Given that the underlying hardware layout remains identical to the previous version, this update adds minipack3nm to PlatformProductInfo.cpp within the Minipack3n framework.
This allows the new platform to leverage existing qsfp_service and led_service logic,
as well as pass qsfp_hw_test and led_service_hw_test through proper PlatformType identification without requiring redundant hardware-specific implementations.

Test Plan

• qsfp_hw_test
  step1. Copy minipack3n.materialized_JSON to minipack3nm.materialized_JSON in qsfp-config.
  step2. Modify the mode in the new JSON from minipack3n to minipack3nm.
  step3. Goal: Confirm that the FBOSS framework can successfully recognize the minipack3nm platform identifier.

1. qsfp-hw-test command:
/opt/fboss/bin/run_test.py qsfp --filter_file=/opt/fboss/share/hw_sanity_tests/t0_qsfp_hw_tests.conf --qsfp-config /opt/fboss/share/qsfp_test_configs/minipack3nm.materialized_JSON

• led_service_hw_test
  Generate led.conf with the mode field set to minipack3nm

/tmp/led.conf
{
  "defaultCommandLineArgs": {
    "mode": "minipack3nm"
  },
  "ledControlledThroughService": false
}

2-1. LED color change test command:
/opt/fboss/bin/led_service_hw_test --gtest_filter=LedServiceTest.checkLedBlinking --led-config /tmp/led.conf --visual_delay_sec 0

2-2. LED blinking test command:
/opt/fboss/bin/led_service_hw_test --gtest_filter=LedServiceTest.checkForceLed  --led-config /tmp/led.conf --visual_delay_sec 0

Test Result:

1. qsfp_hw_test t0 result:
   minipact3nm_t0_qsfp_hw_test.log.zip

Running all tests took 0:09:35.051965 between 2026-05-22 14:16:21.650426 and 2026-05-22 14:25:56.702391
[       OK ] cold_boot.EmptyHwTest.CheckInit (48377 ms)
[       OK ] warm_boot.EmptyHwTest.CheckInit (26383 ms)
[       OK ] cold_boot.HwTest.i2cStressRead (47942 ms)
[       OK ] warm_boot.HwTest.i2cStressRead (28433 ms)
[       OK ] cold_boot.HwTest.i2cStressWrite (51967 ms)
[       OK ] warm_boot.HwTest.i2cStressWrite (29584 ms)
[       OK ] cold_boot.HwTest.cmisPageChange (59035 ms)
[       OK ] warm_boot.HwTest.cmisPageChange (38583 ms)
[       OK ] cold_boot.HwTransceiverResetTest.resetTranscieverAndDetectPresence (94671 ms)
[       OK ] warm_boot.HwTransceiverResetTest.resetTranscieverAndDetectPresence (79749 ms)
[       OK ] cold_boot.HwStateMachineTest.CheckPortsProgrammed (45413 ms)
[       OK ] warm_boot.HwStateMachineTest.CheckPortsProgrammed (24724 ms)
Summary:
   OK : 12
   FAILED : 0
   SKIPPED : 0
   TIMEOUT : 0

2-1. led_service_hw_test led color change test result:
minipact3nm_led_color_change.log

[       OK ] LedServiceTest.checkLedColorChange (1623 ms)
[----------] 1 test from LedServiceTest (1623 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (1623 ms total)
[  PASSED  ] 1 test.

2-2. led_service_hw_test led blinking test result:
minipact3nm_led_blinking_test.log

[       OK ] LedServiceTest.checkLedBlinking (6212 ms)
[----------] 1 test from LedServiceTest (6212 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (6212 ms total)
[  PASSED  ] 1 test.