[bug]: XLSX Read Action reports error on Output Test

### Describe the bug

When user tries to produce temporary output in XLSX component's Output tab an user interface popup error message appears.

In the log there is NullPointerException

### Steps To Reproduce

setup file
setup xlsx
click XLSX output tab
click XLSX Test Component

### Expected behavior

We should see columns

### Version

2.3.1

### OS

OsX

### Browser

_No response_

### Additional context

com.bytechef.platform.component.definition.FileEntryImpl#FileEntryImpl(java.lang.String, java.lang.String, java.lang.String, java.lang.String)