Component: The Rest of the PrimeVue buttons (#7649)

## Summary

Automated initial change, cleaned up manually.

Please check the screenshot changes.

Includes a11y updates to icon buttons.

Doesn't hit the buttons in Desktop.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7649-WIP-Component-The-Rest-of-the-PrimeVue-buttons-2ce6d73d365081d68e06f200f1321267)
by [Unito](https://www.unito.io)

---------

Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

src/components/graph/CanvasModeSelector.vue

@@ -1,21 +1,19 @@
 <template>
   <Button
     ref="buttonRef"
-    severity="secondary"
+    variant="secondary"
     class="group h-8 rounded-none! bg-comfy-menu-bg p-0 transition-none! hover:rounded-lg! hover:bg-interface-button-hover-surface!"
     :style="buttonStyles"
     @click="toggle"
   >
-    <template #default>
-      <div class="flex items-center gap-1 pr-0.5">
-        <div
-          class="rounded-lg bg-interface-panel-selected-surface p-2 group-hover:bg-interface-button-hover-surface"
-        >
-          <i :class="currentModeIcon" class="block h-4 w-4" />
-        </div>
-        <i class="icon-[lucide--chevron-down] block h-4 w-4 pr-1.5" />
+    <div class="flex items-center gap-1 pr-0.5">
+      <div
+        class="rounded-lg bg-interface-panel-selected-surface p-2 group-hover:bg-interface-button-hover-surface"
+      >
+        <i :class="currentModeIcon" class="block h-4 w-4" />
       </div>
-    </template>
+      <i class="icon-[lucide--chevron-down] block h-4 w-4 pr-1.5" />
+    </div>
   </Button>
 
   <Popover
@@ -56,10 +54,10 @@
 </template>
 
 <script setup lang="ts">
-import Button from 'primevue/button'
 import Popover from 'primevue/popover'
 import { computed, ref } from 'vue'
 
+import Button from '@/components/ui/button/Button.vue'
 import { useCanvasStore } from '@/renderer/core/canvas/canvasStore'
 import { useCommandStore } from '@/stores/commandStore'