aws-bedrockagentcore: Annotations are not acknowledgeable on Runtime

### Describe the bug

Bedrock AgentCore library is still using old `Annotations.addWarning()` and `Annotations.addInfo()` in the `Runtime` class, which makes these annotations not acknowledgeable.

### Regression Issue

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

### Last Known Working CDK Library Version

2.267.0

### Expected Behavior

Annotation should be acknowledgeable.

### Current Behavior

Annotation are not acknowledgeable.

### Reproduction Steps

```py
# INFO Container URI validation skipped as it contains unresolved CDK tokens. The URI will be validated at deployment time. (Construct Annotations)
# Agents/Foo
# Acknowledge with 'Construct-Annotations::info-annotation'
runtime = agentcore.Runtime(stack, "Foo",
runtime_name = "foo",
agent_runtime_artifact = agentcore.AgentRuntimeArtifact.from_ecr_repository(
repository = ecr.Repository(stack, "Repository",
repository_name = "bar",
),
tag = "latest"
)
)
Annotations.of(runtime).acknowledge_info(
id = "Construct-Annotations::info-annotation", # Won't work as the annotation do not have any id
message = "Ignore container URI validation"
)
```

### Possible Solution

Move to `Annotations.addWarningV2()` and `Annotations.addInfoV2()`.
I could probably do the fix if there is some documentation on conventions for message ids somewhere.

### Additional Information/Context

_No response_

### AWS CDK Library version (aws-cdk-lib)

-

### AWS CDK CLI version

2.1139.0 (build d51353e)

### Node.js Version

v24.15.0

### OS

macOS 26.6.2

### Language

Python

### Language Version

Python (3.14.7)

### Other information

_No response_

Start by locating the Bedrock AgentCore Runtime class and its uses of Annotations.addWarning() and Annotations.addInfo(); then inspect nearby addWarningV2()/addInfoV2() usage for message-ID conventions. Update the Runtime annotations so the documented Construct-Annotations::info-annotation acknowledgment works, and run the relevant AgentCore tests or validation suite.

Written by the indexing model from the issue text.