[Feature] SAI time explanation/hints

**Is your feature request related to a problem? Please describe.**

SAI Timers are in milliseconds.
WoWDE converts timers automatically into seconds and blends out previous user input and shows converted times.

**Describe the solution you'd like**

The user gets no information about this at first hand. Maybe a info box with an explanation that timers are milliseconds and gets converted for readability afterwards would be nice.

**Additional context**


No files or tests are named. Start by locating the SAI timer input and converted-time display in the editor, then review the existing UI patterns for an explanatory info box; done means users can see that timers use milliseconds and are converted for readability.

Written by the indexing model from the issue text.