Media Gallery: change speed in view slide show doesn't have any effect

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.1.30 EE GA3, 6.2.X EE, 7.0.1 CE GA2, Master
• Fix Version/s: 7.1.X, Master
• Component/s: DM, DM > Media Gallery
• Labels: None
• Fix Priority: 2
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/41263

Steps to reproduce

1. Go to the document library.
2. Create a folder called "Images" and add two images on it.
3. Go to a page and add the Media Gallery portlet.
4. Go to the portlet configuration and select "Show Actions"
5. Go back to the page and select "View Slide Show" option in the action menu for the folder "Images"
6. Notice that the speed to slide images is 3, modify it setting 10 as speed.

Results:
The images slide every 3 seconds, the same speed than before modifying the value.

Expected results:
The images slide every 10 seconds