Integrate the legacy presets with quick-configure fields

[ohltyler]

The existing presets have quick-configure fields defined, such that when creating from the New Workflow page, we offer a few fields to be defined initially (models, certain document fields, etc.) that help auto-populate much of the configuration in the downstream ingest pipelines / search queries / search pipelines. We should update the preset values for the legacy use cases:

1. Legacy semantic search: use any configured model ID & text embedding field in the text_embedding ingest processor & the neural search query
2. Legacy hybrid search: use any configured model ID & text embedding field in the text_embedding ingest processor & the neural search query
3. Multimodal search: use any configured model ID, text embedding field, and image embedding field in the text_image_embedding ingest processor & the neural search query