chore(bedrock): support Anthropic Claude 4.5 Haiku (#35758)

Support new model.

https://aws.amazon.com/about-aws/whats-new/2025/10/claude-4-5-haiku-anthropic-amazon-bedrock/

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: mazyu36

packages/aws-cdk-lib/aws-bedrock/lib/foundation-model.ts

@@ -242,6 +242,9 @@ export class FoundationModelIdentifier {
   /** Base model "anthropic.claude-3-haiku-20240307-v1:0:200k" */
   public static readonly ANTHROPIC_CLAUDE_3_HAIKU_20240307_V1_0_200K = new FoundationModelIdentifier('anthropic.claude-3-haiku-20240307-v1:0:200k');
 
+  /** Base model "anthropic.claude-haiku-4-5-20251001-v1:0" */
+  public static readonly ANTHROPIC_CLAUDE_HAIKU_4_5_20251001_V1_0 = new FoundationModelIdentifier('anthropic.claude-haiku-4-5-20251001-v1:0');
+
   /** Base model "anthropic.claude-3-opus-20240229-v1:0" */
   public static readonly ANTHROPIC_CLAUDE_3_OPUS_20240229_V1_0 = new FoundationModelIdentifier('anthropic.claude-3-opus-20240229-v1:0');