Describe the bug

When only bucket is provided for spark event log path in job, the s3 path does not end with slash.
It is accepted in job API, but it does not work on actual Spark UI.

Expected Behavior

S3 path specified in --spark-event-logs-path ends with slash

Current Behavior

S3 path specified in --spark-event-logs-path does not end with slash in case only bucket is provided but prefix is not provided

Reproduction Steps

      sparkUI: {
        enabled: true,
      },

Possible Solution

Add trailing slash when it does not end with slash

Additional Information/Context

No response

CDK CLI Version

2.131.0

Framework Version

No response

Node.js Version

20.11.1

OS

macOS Ventura 13.6.4

Language

TypeScript

Language Version

No response

Other information

No response