fix(cdk): remove source-map-support from typescript init templates (#32113)

### Issue

Closes #20754
Closes #30231

### Reason for this change

This package is no longer needed and not recommended for users.

### Description of changes

Remove the package from `package.json` and sample code.

### Description of how you validated changes

Tested locally.

### 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)

----

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

Author: mrgrain

packages/aws-cdk/lib/init-templates/app/typescript/bin/%name%.template.ts

@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-import 'source-map-support/register';
 import * as cdk from 'aws-cdk-lib';
 import { %name.PascalCased%Stack } from '../lib/%name%-stack';
 

packages/aws-cdk/lib/init-templates/app/typescript/package.json

@@ -21,7 +21,6 @@
   },
   "dependencies": {
     "aws-cdk-lib": "%cdk-version%",
-    "constructs": "%constructs-version%",
-    "source-map-support": "^0.5.21"
+    "constructs": "%constructs-version%"
   }
-}
+}