[backport cloud/1.37] Linear mode bug fixes (#8072)

Backport of #8054 to `cloud/1.37`

Automatically created by backport workflow.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8072-backport-cloud-1-37-Linear-mode-bug-fixes-2e96d73d365081dfa542f08405043203)
by [Unito](https://www.unito.io)

Co-authored-by: AustinMroz <austin@comfy.org>

src/renderer/extensions/linearMode/OutputHistory.vue

@@ -277,6 +277,7 @@ useEventListener(document.body, 'keydown', (e: KeyboardEvent) => {
                   'border-2'
               )
             "
+            @click="selectedIndex = [index, key]"
           >
             <i
               :class="