Fix #4346: Optimize EmbeddingUtils.toPrimitive(List<Float>)

Fixes #4346

Signed-off-by: Waldemar Panas <[email protected]>
(cherry picked from commit d1133dc)

Author: wpanas

spring-ai-model/src/main/java/org/springframework/ai/model/EmbeddingUtils.java

@@ -39,7 +39,17 @@ public static List<Float> doubleToFloat(final List<Double> doubles) {
 	}
 
 	public static float[] toPrimitive(List<Float> floats) {
-		return toPrimitive(floats.toArray(new Float[floats.size()]));
+		if (floats == null) {
+			return null;
+		}
+		if (floats.isEmpty()) {
+			return EMPTY_FLOAT_ARRAY;
+		}
+		final float[] result = new float[floats.size()];
+		for (int i = 0; i < result.length; i++) {
+			result[i] = floats.get(i);
+		}
+		return result;
 	}
 
 	public static float[] toPrimitive(final Float[] array) {