Folder downloads do not have a .zip extension

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 DXP SP1
• Fix Version/s: 7.0.0 DXP FP8, 7.0.0 DXP SP2, 7.0.3 CE GA4
• Component/s: Documents & Media
• Labels:
  • ee-7.0.x-only
  • liferay-digital-enterprise-70-sp2
  • liferay-fixpack-de-8-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal-ee/pull/14949

Description:
The file downloaded when attempting to download a Documents and Media folder does not have a .zip extension.

Steps to Reproduce:
1. Sign in to documents and media section of a site in the control panel
2. Create a folder with name "Test Folder" and uploads a few documents/images to the folder
3. Click "Download" menu from folder context menu
4. Observe the downloaded file is called "Test Folder" with no extension
5. Rename the file to "Test_Folder.zip" and try to unzip, then observe normal behavior from the archived file (should be able to see a list of files in it once it's unzipped)

Expected:
File should have a .zip extenion when downloaded.
Actual:
File does not have a .zip extension when downloaded.

Additional Testing:
7.0.x: 3e49837722aee7b9706ced5dea813b9092e8a6e3
Issue reproduced in branch.

Master: 473382f24854e2cf99ff6fa657cbb1c26af02c40
Issue is fixed in master.