Adjust how text is split depending on input type (#1238)

server/utils/EmbeddingEngines/azureOpenAi/index.js

server/utils/EmbeddingEngines/lmstudio/index.js

server/utils/EmbeddingEngines/localAi/index.js

server/utils/EmbeddingEngines/native/index.js

server/utils/EmbeddingEngines/ollama/index.js

server/utils/EmbeddingEngines/openAi/index.js