chore(kinesisfirehose-destinations-alpha): backfill missing enums for kinesisfirehose-destinations-alpha (#33633)

### Description of changes
backfill missing enums for kinesisfirehose-destinations-alpha

### 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: paulhcsun

packages/@aws-cdk/aws-kinesisfirehose-destinations-alpha/lib/common.ts

@@ -28,6 +28,10 @@ export class Compression {
    * ZIP
    */
   public static readonly ZIP = new Compression('ZIP');
+  /**
+   * Uncompressed
+   */
+  public static readonly UNCOMPRESSED = new Compression('UNCOMPRESSED');
 
   /**
    * Creates a new Compression instance with a custom value.