fix(front): relativeTime is not defined (#309)

## 📝 Description
9c92112 introduced a change from
`relativeTime` to `timeAgo` but it was not propagated everywhere. This
results in a bug in a front-end bug on Activity Monitor when a debugging
session is running, hiding the debugging session which makes stopping it
manually no longer possible.

<img width="488" alt="Screenshot 2025-05-20 at 10 41 41"
src="https://github.com/user-attachments/assets/233ea00b-8212-480c-b0c7-f4f854598736"
/>

## ✅ Checklist
- [ ] I have tested this change
- [ ] This change requires documentation update

(I can't spend several hours setting up this repository locally yet,
sorry! It's a very simple front-end fix though)

Co-authored-by: Veljko Maksimovic <[email protected]>

Author: d4rky-pl

front/assets/js/activity_monitor/items/item.js

@@ -215,7 +215,7 @@ function renderDebugJob(item, state) {
         <div class="w-25-l">
           <div class="flex flex-row-reverse-l items-center">
             <img src="${item.user_icon_path}" class="db br-100 ba b--black-50" width="32" height="32">
-            <div class="f5 gray ml2 ml3-m ml0-l mr3-l tr-l">${relativeTime(item.created_at)} <br> by ${item.user_name}</div>
+            <div class="f5 gray ml2 ml3-m ml0-l mr3-l tr-l">${timeAgo(item.created_at)} <br> by ${item.user_name}</div>
           </div>
         </div>
       </div>
@@ -247,7 +247,7 @@ function renderDebugProject(item, state) {
         <div class="w-25-l">
           <div class="flex flex-row-reverse-l items-center">
             <img src="${item.user_icon_path}" class="db br-100 ba b--black-50" width="32" height="32">
-            <div class="f5 gray ml2 ml3-m ml0-l mr3-l tr-l">${relativeTime(item.created_at)} <br> by ${escapeHtml(item.user_name)}</div>
+            <div class="f5 gray ml2 ml3-m ml0-l mr3-l tr-l">${timeAgo(item.created_at)} <br> by ${escapeHtml(item.user_name)}</div>
           </div>
         </div>
       </div>