Issue #3478075: Remove the canonical link template.

The link template doesn't get a route attached by the route provider. Causing issues with ::getUrl().

Closes #3478075

added 6 commits

• 081e68ee - Restored UI text about default values.
• ade7769f - Restored UI text about textareas.
• 5deefe46 - Renamed method.
• 5ece9dcf - Added return types.
• 8521f692 - Removed unused parameters.
• df68ae8d - Issue #3478075: Remove the canonical link template.

Compare with previous version

merged manually