S3 Event Notification Filter Rule Names changing string value from case insensitive to case sensitive

[ge0Aja]

Describe the bug

I'm using FilterRuleNames to have a prefix filter when creating an event notification for an S3 bucket.
I'm using the const enum values provided by the SDK to create the filter. However, when I query back the created event notification and match against the filter rule name I get empty values.
I've checked on the created event notification and the rule seem to be there, but with a different name i.e. Prefix instead of prefix.

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

I expect to find the created rule using the filter rule name provided by the SDK.

Current Behavior

If we iterate over the created filter names we won't be able to match any of the names provided by the SDK

Reproduction Steps

Create an event notification on an S3 bucket with a filter rule to target a specific prefix for example

var itemId = "ID"
var lambdaArn = "arn"
var prefix = "prefix"

_, err = s3Client.PutBucketNotificationConfiguration(context.Background(), &s3.PutBucketNotificationConfigurationInput{
		Bucket: &bucketName,
		NotificationConfiguration: &types.NotificationConfiguration{
			LambdaFunctionConfigurations: []types.LambdaFunctionConfiguration{
				types.LambdaFunctionConfiguration{
					Id:                &itemId,
					LambdaFunctionArn: &lambdaArn,
					Events:             []types.Event{types.EventS3ObjectCreated, types.EventS3ObjectRemoved},
					Filter: &types.NotificationConfigurationFilter{
						Key: &types.S3KeyFilter{
							FilterRules: []types.FilterRule{
								{
									Name:  types.FilterRuleNamePrefix,
									Value: &prefix,
								},
							},
						},
					},
				},
			},
		},
	})

Try to query it back again and switch case match using the prefix enum value

var prefix string
var suffix string

out, err := s3Client.GetBucketNotificationConfiguration(context.Background(), &s3.GetBucketNotificationConfigurationInput{
		Bucket: &bucketName,
})

if err != nil {
    return err
}

lfcs := out.LambdaFunctionConfigurations

for _, lfc := range lfcs.LambdaFunctionConfigurations {
	for _, rule := range lfc.Filter.Key.FilterRules {
		if rule.Value == nil {
			continue
		}

		switch rule.Name {
		case types.FilterRuleNamePrefix:
			prefix = *rule.Value
		default:
		}
	}
}

prefix will always be ""

Possible Solution

No response

Additional Information/Context

No response

SDK version used

v1.32.2

Environment details (Version of Go (go version)? OS name and version, etc.)

go 1.23.1 / ubuntu 22.04