Linear: progressbar, tooltips, and output fixes (#8250)

- Fixes only the first output being displayed in linear mode after the
jobs migration
- Fixes selected output no longer scrolling into view in history
- Adds a progress bar indicator on running job
<img width="113" height="102" alt="image"
src="https://github.com/user-attachments/assets/ca684dbe-12c8-44aa-98f0-2985c0159156"
/>
- Moves linear toggle button to v-tooltip
- Fixes placeholder sometimes continuing to display after a new output.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8250-Linear-progressbar-tooltips-and-output-fixes-2f06d73d365081ca9fa3ebf0e2516487)
by [Unito](https://www.unito.io)

src/components/sidebar/ModeToggle.vue

@@ -14,16 +14,24 @@ function toggleLinearMode() {
 <template>
   <div class="p-1 bg-secondary-background rounded-lg w-10">
     <Button
+      v-tooltip="{
+        value: t('linearMode.linearMode'),
+        showDelay: 300,
+        hideDelay: 300
+      }"
       size="icon"
-      :title="t('linearMode.linearMode')"
       :variant="canvasStore.linearMode ? 'inverted' : 'secondary'"
       @click="toggleLinearMode"
     >
       <i class="icon-[lucide--panels-top-left]" />
     </Button>
     <Button
+      v-tooltip="{
+        value: t('linearMode.graphMode'),
+        showDelay: 300,
+        hideDelay: 300
+      }"
       size="icon"
-      :title="t('linearMode.graphMode')"
       :variant="canvasStore.linearMode ? 'secondary' : 'inverted'"
       @click="toggleLinearMode"
     >