Improve sequencing instrument model mapping in read-lab-metadata to avoid ambiguity

[Aberdur]

Issue Description

In the read-lab-metadata module, the mapping of the sequencing_instrument_model is currently performed using only the first word of the provided value. This approach introduces ambiguity and incorrect mappings, especially for cases such as "MinION", which by itself does not uniquely identify the sequencing platform or instrument model.

Expected Behavior

The mapping of sequencing_instrument_model should:

• Avoid relying solely on the first word of the input value.
• Correctly distinguish between platforms and models (e.g., MinION vs GridION vs PromethION).
• Either:
  • Use a more robust mapping strategy (full string matching, controlled vocabulary), or
  • Explicitly detect ambiguous values and raise a clear warning or validation error.