Remove Donor, Specimen, and Sample from Analysis Data Classes in SONG

[Azher2Ali]

Summary:
This PR removes all references to Donor, Specimen, and Sample from the Analysis data classes in SONG. The changes focus on the following classes:

• bio.overture.song.core.model.Analysis
• bio.overture.song.server.model.analysis.Analysis
• bio.overture.song.server.model.analysis.DataEntity

Details:

• Removed all hardcoded references to donor, specimen, and sample classes or IDs representing these entities in the data models.
• Cleaned up references in other classes that relied on these properties to ensure the code base continues to build and function correctly.
• We have not yet removed the classes representing Donor, Specimen, and Sample entities or their corresponding repositories. That will be done in a later step once the system is stable without these entities.

[joneubank]

Thanks for opening this. I want to keep this in a feature branch until we complete the whole epic . I'm creating a new branch feat/refactor-analysis-data-model based on develop and setting that as the base for this PR. We can merge the entire feature into develop when this is done.