Add EventGrid Datasender role to Status Changed Topic

All Submissions:

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• [YES] Have you added an explanation of what your changes do and why you'd like us to include them?
• [YES] I have updated the documentation accordingly.
• [YES] My code follows the code style of this project.

Current Behavior or Linked Issues

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• Adding EventGrid Data Sender role for status changed topic in Data Partition resources to the OSDU Identity principal.
• When AZURE_MSI_ISENABLED falg is enabled, file service which is using status changed topic could not access it with lack of permissions.

`"error": {

    "code": "Unauthorized",

    "message": "The principal associated with access token presented with the incoming request does not have permission to send data to /subscriptions/7c052588-ead2-45c9-9346-5b156a157bd1/resourceGroups/osdu-mvp-dp1glab-ky7v-rg/providers/Microsoft.EventGrid/topics/osdu-mvp-dp1glab-ky7v-grid-statuschangedtopic.`

• After this permission is assigned to the OSDU identity principal, service should connect with eventgrid with no issues, even with AZURE_MSI_ISENABLED falg is enabled.

• Tested changes with Data partition pipeline

Does this introduce a breaking change?

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• [NO]