Additional constructor that take metadata mode

Author: rpanackal

foundation-models/openai/src/test/java/com/sap/ai/sdk/foundationmodels/openai/spring/EmbeddingModelTest.java

@@ -96,7 +96,7 @@ void testEmbedDocument() {
 
     val expectedOpenAiRequest =
         new EmbeddingsCreateRequest()
-            .input(EmbeddingsCreateRequestInput.create(List.of(document.getText())));
+            .input(EmbeddingsCreateRequestInput.create(List.of(document.getFormattedContent())));
 
     when(client.embedding(assertArg(assertRecursiveEquals(expectedOpenAiRequest))))
         .thenReturn(openAiResponse);