Use property name list instead of values in some models for Python (

#27336)

specification/ai/ImageAnalysis/models.tsp

@@ -82,6 +82,7 @@ The first caption always applies to the whole image.
 model DenseCaptionsResult {
   @doc("The list of image captions.")
   @minItems(1)
+  @projectedName("python", "list")
   values: Array<DenseCaption>;
 }
 
@@ -220,13 +221,15 @@ model ImageMetadata {
 model ObjectsResult {
   @doc("A list of physical object detected in an image and their location.")
   @minItems(0)
+  @projectedName("python", "list")
   values: Array<DetectedObject>;
 }
 
 @doc("Represents a list of people detected in an image and their location.")
 model PeopleResult {
   @doc("A list of people detected in an image and their location.")
   @minItems(0)
+  @projectedName("python", "list")
   values: Array<DetectedPerson>;
 }
 
@@ -245,6 +248,7 @@ These regions preserve as much content as possible from the analyzed image, with
 model SmartCropsResult {
   @doc("A list of crop regions.")
   @minItems(1)
+  @projectedName("python", "list")
   values: Array<CropRegion>;
 }
 
@@ -273,6 +277,7 @@ that appear in the image.
 model TagsResult {
   @doc("A list of tags.")
   @minItems(0)
+  @projectedName("python", "list")
   values: Array<DetectedTag>;
 }