Patching override s3expire shape (#3180)

* always reshape s3expires to timestamp for backwards compatibility

Author: wty-Bryant

.changelog/c989077ef82d4e47817a6d88dd6262ad.json

@@ -0,0 +1,8 @@
+{
+    "id": "c989077e-f82d-4e47-817a-6d88dd6262ad",
+    "type": "bugfix",
+    "description": "Statically define s3 expires shape as timestamp, this patch should guarantee s3 operations backwards compatibility after s3 team removes the expires reshape.",
+    "modules": [
+        "."
+    ]
+}

codegen/smithy-aws-go-codegen/src/main/java/software/amazon/smithy/aws/go/codegen/customization/service/s3/S3ExpiresShapeCustomization.java

@@ -32,6 +32,7 @@
 import software.amazon.smithy.model.shapes.Shape;
 import software.amazon.smithy.model.shapes.ShapeId;
 import software.amazon.smithy.model.shapes.StringShape;
+import software.amazon.smithy.model.shapes.TimestampShape;
 import software.amazon.smithy.model.traits.DeprecatedTrait;
 import software.amazon.smithy.model.traits.DocumentationTrait;
 import software.amazon.smithy.model.traits.HttpHeaderTrait;
@@ -64,6 +65,10 @@ public Model preprocessModel(Model model, GoSettings settings) {
         }
 
         var withExpiresString = model.toBuilder()
+                .removeShape(S3_EXPIRES)
+                .addShape(TimestampShape.builder()
+                        .id(S3_EXPIRES)
+                        .build())
                 .addShape(StringShape.builder()
                         .id(S3_EXPIRES_STRING)
                         .build())