H6-128: Update media settings

[dgodwin-nokia]

Why I did it

Update the H6-128 media settings with the latest tuned values.

Work item tracking

• Microsoft ADO (number only):

How I did it

Updated the H6-128 media_settings.json using the settings currently running on the H6-128 system.

How to verify it

Validate the JSON file and confirm the settings load correctly on an H6-128 system.

Which release branch to backport (provide reason below if selected)

• 202305
• 202311
• 202405
• 202411
• 202505
• 202511
• 202512
• 202605
• 202608

Tracking issue/work item for backport/cherry-pick request (GitHub issue or Microsoft ADO): N/A
Failure type: N/A

Tested branch

• master
• 202305
• 202311
• 202405
• 202411
• 202505
• 202511
• 202512
• 202605
• 202608
• N/A

Test result

JSON syntax validation passed. The media settings are currently running on an H6-128 system with all links healthy.

Description for the changelog

Update H6-128 media settings with the latest tuned values.

Link to config_db schema for YANG module changes

N/A

A picture of a cute animal (not mandatory but encouraged)

N/A

[azure-pipelines]

Azure Pipelines:
There may be pipelines that require an authorized user to comment /azp run to run.

[mssonicbld]

/azp run Azure.sonic-buildimage

[azure-pipelines]

Azure Pipelines:
Successfully started running 1 pipeline(s).

[bingwang-ms]

Approving per offline test and discussion

[mssonicbld]

This PR has backport request for branch(es): 202511,202512,202605.

Request label(s) for branch(es) msft-202512,202605 already exists.
Added label(s) for branch(es) 202511.

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[mssonicbld]

This PR has backport request label(s) for branch(es): 202511,202605,msft-202512, but is missing required test information. Please make sure you tick the tested branch(es) in the Tested branch section and provide test evidence (e.g., 202511: <test result>) in the Test result section as well in your PR description.

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[bingwang-ms]

Retriggered PR test

[mssonicbld]

Cherry-pick PR to msft-202512: Azure/sonic-buildimage-msft#3144

[bingwang-ms]

Merging per discussion in meeting on 09/18.

[mssonicbld]

The change is not in 202605 yet. @dgodwin-nokia, please manually create the cherry pick PR for branch 202605.
You can ping the release branch owner(github account: vaibhavhd) to approve your cherry pick PR.
If this change is already in 202605, please comment "already in 202605". Thanks!

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