Bedrock: CDK / Cloudformation no support for Datasource / KnowledgeBase in Stockholm region eu-north-1

### Describe the bug

I can synth the stack in Stockholm region (eu-north-1) but when I deploy it I get the following:
ValidationError: Template format error: Unrecognized resource types: [AWS::Bedrock::DataSource, AWS::Bedrock::KnowledgeBase].

I can deploy the stack in eu-west-1, looks like the issue https://github.com/aws/aws-cdk/issues/29966 But it did not get fixed when bedrock got available in Stockholm (eu-north-1).

I'm using the latest cdk version 2.118.0 for java/kotlin. implementation("software.amazon.awscdk:aws-cdk-lib:2.188.0").

Is there a solution for this now? Or do I have to wait until another update?

### Regression Issue

- [ ] Select this option if this issue appears to be a regression.

### Last Known Working CDK Version

2.118.0

### Expected Behavior

Expected to be able to deploy the cdk/cloudformation stack as in eu-west-1 (Irland)

### Current Behavior

Not able to deploy a cdk/cloudfromation stack in eu-north-1 that contains [AWS::Bedrock::DataSource, AWS::Bedrock::KnowledgeBase]

### Reproduction Steps

This code will fail on the storage configuration but it gets deployed beyond cdk synth in eu-north-1.
import software.amazon.awscdk.RemovalPolicy
import software.amazon.awscdk.Stack
import software.amazon.awscdk.StackProps
import software.amazon.awscdk.services.bedrock.CfnDataSource
import software.amazon.awscdk.services.bedrock.CfnKnowledgeBase
import software.amazon.awscdk.services.iam.ManagedPolicy
import software.amazon.awscdk.services.iam.Role
import software.amazon.awscdk.services.iam.RoleProps
import software.amazon.awscdk.services.iam.ServicePrincipal

import software.amazon.awscdk.services.s3.Bucket
import software.constructs.Construct

class BedrockKnowledgeBaseStack(scope: Construct, id: String, props: StackProps? = null) : Stack(scope, id, props) {
init {

// Create a new S3 bucket
val s3Bucket = Bucket.Builder.create(this, "Destroy")
.removalPolicy(RemovalPolicy.DESTROY)
.autoDeleteObjects(true)
.build()

// Create an IAM Role for Bedrock to access other AWS resources
val bedrockRole = Role(this, "BedrockRole", RoleProps.builder()
.assumedBy(ServicePrincipal("bedrock.amazonaws.com"))
.managedPolicies(listOf(
ManagedPolicy.fromAwsManagedPolicyName("AmazonBedrockFullAccess"),
ManagedPolicy.fromAwsManagedPolicyName("AmazonS3ReadOnlyAccess")
))
.build())

// Create a Bedrock Knowledge Base
val knowledgeBase = CfnKnowledgeBase.Builder.create(this, "MyKnowledgeBase")
.name("MyBedrockKnowledgeBase")
.roleArn(bedrockRole.roleArn)
.knowledgeBaseConfiguration(
CfnKnowledgeBase.KnowledgeBaseConfigurationProperty.builder()
.type("VECTOR")
.vectorKnowledgeBaseConfiguration(
CfnKnowledgeBase.VectorKnowledgeBaseConfigurationProperty.builder()
.embeddingModelArn("arn:aws:bedrock:${this.region}::foundation-model/amazon.titan-embed-text-v2")
.build()
)
.build()
)
.build()

// Create the S3 DataSource for Bedrock KnowledgeBase
val dataSource = CfnDataSource.Builder.create(this, "MyS3DataSource")
.knowledgeBaseId(knowledgeBase.attrKnowledgeBaseId)
.name("S3DataSource")
.dataSourceConfiguration(
CfnDataSource.DataSourceConfigurationProperty.builder()
.type("S3")
.s3Configuration(
CfnDataSource.S3DataSourceConfigurationProperty.builder()
.bucketArn(s3Bucket.bucketArn)
.build()
)
.build()
)
.build()

// Grant Bedrock access to the S3 bucket
s3Bucket.grantRead(bedrockRole)

}
}

### Possible Solution

Add the missing support to Stockholm eu-north-1 as you have in the other regions that have Bedrock support like eu-west-1 Irland.

### Additional Information/Context

_No response_

### CDK CLI Version

2.1005.0

### Framework Version

_No response_

### Node.js Version

23.10.0

### OS

MacOS

### Language

Java

### Language Version

Kotlin 2.1.10

### Other information

_No response_

Start with the BedrockKnowledgeBaseStack reproduction and compare the synthesized templates for eu-north-1 and eu-west-1, focusing on AWS::Bedrock::DataSource and AWS::Bedrock::KnowledgeBase. Confirm whether the regional resource types are supported by CloudFormation; done means the Kotlin CDK stack deploys successfully in Stockholm, or the issue documents the external service limitation.

Written by the indexing model from the issue text.