Pressing the Cancel button in the world import window displays an error message

Summary:
In the 1.21.130 Preview, pressing the Import world button in the Worlds menu and then selecting Cancel in File Explorer causes an unexpected error message to appear. This behavior does not occur in the 1.21.124 Stable version.

Steps to Reproduce:

1. Navigate to Play > Worlds.

2. Press the Import world button.

3. In File Explorer, press the Cancel button.

Observed Results:
File Explorer closes, and a pop-up appears in-game with the following message:

An error occurred
There was an issue importing this world.

As no world was selected and attempted to be imported, this message does not make sense.

Expected Results:
File Explorer should simply close, with no in-game error message appearing—matching the behavior seen in 1.21.124. This error message should only appear if a world import was actually attempted and the import failed.