fix(Toast): check if window exists to run startTimer in CSR only (#1247)

* fix(Toast): check if window exists to run startTimer in CSR only

* use isClient to to test if it's CSR

packages/radix-vue/src/Toast/ToastRootImpl.vue

@@ -1,4 +1,5 @@
 <script lang="ts">
+import { isClient } from '@vueuse/shared'
 import type { PrimitiveProps } from '@/Primitive'
 import type { SwipeEvent } from './utils'
 import { createContext, useForwardExpose } from '@/shared'
@@ -80,6 +81,11 @@ const remainingRaf = useRafFn(() => {
 function startTimer(duration: number) {
   if (!duration || duration === Number.POSITIVE_INFINITY)
     return
+  // startTimer is used inside a watch with immediate set to true.
+  // This results in code execution during SSR.
+  // Ensure this code only runs in a browser environment
+  if (!isClient)
+    return
   window.clearTimeout(closeTimerRef.value)
   closeTimerStartTimeRef.value = new Date().getTime()
   closeTimerRef.value = window.setTimeout(handleClose, duration)