Cannot make a ddm template cacheable or not

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: Master
• Component/s: Dynamic Data Mapping > Template Editor, Web Content > Web Content Administration
• Labels: None
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/67283

Reproducing Steps:

1. Go to Content > Web Content > Templates > Plus-button
2. Unfold the tab "Details"
   Expected: There's a checkbox with a help message to make the template cacheable or not.
   Observed: There's no such checkbox
3. Edit an existing template
   Expected: There's a checkbox with a help message to make the template cacheable or not.
   Observed: There's no such checkbox

Notes:

1. The checkbox is displayed when the variable showCacheableInput has value true.
2. The checkbox is present in 7.1.x.
3. The templates are created as non-cacheable by default.