EKS: Add Support for ServiceTimeout on all KubernetesManifest and HelmChart objects

### Describe the feature

Since a `CustomResource` underlies these, they should support the `ServiceTimeout` property so when a create or delete fails and doesn't cause an exception in the function, the CFN stack is not blocked for an hour waiting to fail.

### Use Case

When a create or delete fails and doesn't cause an exception in the function, the CFN stack is not blocked for an hour waiting to fail.

### Proposed Solution

In the `KubernetesManifest` props, add a `readonly serviceTimeout?: Duration;` property, and then set it in the `KubernetesManifest` constructor. Similarly, do the same for `HelmChart`.

### Other Information

_No response_

### Acknowledgements

- [ ] I may be able to implement this feature request
- [ ] This feature might incur a breaking change

### CDK version used

2.170.1

### Environment details (OS name and version, etc.)

darwin

Start by locating the TypeScript EKS definitions and constructors for KubernetesManifest and HelmChart. Trace how CustomResource properties are exposed and configured, then verify that both objects accept and apply serviceTimeout for create and delete failures; no specific test file is named in the issue.

Written by the indexing model from the issue text.