JupyterLab doesn't allow cmd/ctrl+C/V as hotkey for cell output

### Product Version

- [x] Amazon SageMaker Studio Classic
- [ ] Amazon SageMaker Studio
- [ ] Issue is not related to SageMaker Studio

### Issue Description

In JupyterLab, notebook doesn't allow users to use cmd/ctrl+C/V as hotkey for cell output. E.g., when I tried to copy the error message from the output to search what it means, there's no way to do it except manually copying

### Expected Behavior

cmd+C (in Mac) should be enabled to copy cell output

### Observed Behavior

cmd+C (in Mac) doesn't do anything

### Product Category

JupyterLab

### Feedback Category

_No response_

### Other Details

_No response_

The issue names no repository files, tests, or entry points; begin by reproducing the behavior in JupyterLab on Amazon SageMaker Studio Classic with a notebook cell containing output. Trace the notebook output key handling, then verify that cmd/ctrl+C copies cell output successfully and that the existing behavior is covered by a regression test.

Written by the indexing model from the issue text.