Bug report creation form no longer allows more than one Affected Version to be added

Summary:

The previous bug report creation form allowed users to select multiple affected versions while creating a report. After the form update, only a single affected version can now be selected during report creation. Additional versions can only be added after the report has already been submitted.

This creates unnecessary extra steps when reporting issues that affect multiple versions, such as both the current Stable release and Preview/Beta/Snapshot versions.

Steps to Reproduce:

1. Navigate to the Minecraft: Bedrock Edition or Minecraft: Java Edition bug tracker portal.

2. Press the Report New Bug button.

3. Expand the Affects Version dropdown.

4. Attempt to select more than one version.

Observed Results:

Only one affected version can be selected during report creation.

Expected Results:

Multiple affected versions should be selectable during report creation, matching the behavior of the previous bug report creation form.