Support "control after generate" in vue (#6985)

Continuation of #6034 with
- Updated synchronization for seed
- Properly truncates the displayed widget value for the button
- Synchronizes control after generate state with litegraph and allows
for serialization

Several issues from original PR have not (yet) been addressed, but are
likely better moved to future PR
- fix step value being 10 (legacy system)
- ensure it works with COMBO (Fixed in #7095)
- ensure it works with FLOAT (Fixed in #7095)
- either implement or remove the config button functionality - think it
should open settings?

<img width="280" height="694" alt="image"
src="https://github.com/user-attachments/assets/f36f1cb0-237d-4bfc-bff1-e4976775cf98"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6985-Support-control-after-generate-in-vue-2b86d73d365081d8b01ce489d887ff00)
by [Unito](https://www.unito.io)

---------

Co-authored-by: bymyself <cbyrne@comfy.org>
Co-authored-by: github-actions <github-actions@github.com>

src/renderer/extensions/vueNodes/widgets/components/WidgetInputNumberInput.vue

@@ -89,8 +89,11 @@ const buttonTooltip = computed(() => {
       :show-buttons="!buttonsDisabled"
       :pt="{
         root: {
-          class:
-            '[&>input]:bg-transparent [&>input]:border-0 [&>input]:truncate [&>input]:min-w-[4ch]'
+          class: cn(
+            '[&>input]:bg-transparent [&>input]:border-0',
+            '[&>input]:truncate [&>input]:min-w-[4ch]',
+            $slots.default && '[&>input]:pr-7'
+          )
         },
         decrementButton: {
           class: 'w-8 border-0'
@@ -107,6 +110,9 @@ const buttonTooltip = computed(() => {
         <span class="pi pi-minus text-sm" />
       </template>
     </InputNumber>
+    <div class="absolute top-5 right-8 h-4 w-7 -translate-y-4/5">
+      <slot />
+    </div>
   </WidgetLayoutField>
 </template>