Pinecone integration: MetadataDatasetFields mapping doesn't support array of fields for combining multiple source fields

[jirispilka]

When trying to combine multiple source fields into a single metadata field using an array syntax in metadataDatasetFields, the Actor fails with the error: "'list' object has no attribute 'split'".

Current behavior:

• Single field mapping works: "address": "ubicationAddress" successfully maps the field
• Combined fields fail: "address": ["ubicationAddress", "address"] throws an error
• Alternative syntax "address": "ubicationAddress, address" results in empty field

Expected behavior:

Should be able to combine multiple source fields into a single metadata field using array syntax

Example: "address": ["ubicationAddress", "address"] should combine both fields into the address metadata field
This functionality would be useful for cases where we need to combine multiple fields from the source data into a single metadata field, such as combining street address with location data.

Steps to reproduce:

• Set up an Actor with metadata mapping
• Configure metadataDatasetFields with array syntax

{
  "metadataDatasetFields": {
    "address": ["ubicationAddress", "address"]
  }
}

Raised in the Pinecone Integration Actor