fix(ui): issue with schedule publish disappearing on autosave collections (#12078)

Fixes an issue where an autosave being triggered would turn off the
ability to schedule a publish. This happened because we check against
`modified` on the form but with autosave modified is always true.

Now we make an exception for autosave enabled collections when checking
the modified state.

test/versions/collections/Autosave.ts

@@ -18,6 +18,7 @@ const AutosavePosts: CollectionConfig = {
       autosave: {
         interval: 2000,
       },
+      schedulePublish: true,
     },
   },
   access: {

test/versions/e2e.spec.ts

@@ -655,6 +655,7 @@ describe('Versions', () => {
   describe('Scheduled publish', () => {
     beforeAll(() => {
       url = new AdminUrlUtil(serverURL, draftCollectionSlug)
+      autosaveURL = new AdminUrlUtil(serverURL, autosaveCollectionSlug)
     })
 
     test('should schedule publish', async () => {
@@ -725,6 +726,26 @@ describe('Versions', () => {
         timeout: POLL_TOPASS_TIMEOUT,
       })
     })
+
+    test('can still schedule publish once autosave is triggered', async () => {
+      await page.goto(autosaveURL.create)
+      await page.locator('#field-title').fill('scheduled publish')
+      await page.locator('#field-description').fill('scheduled publish description')
+
+      await saveDocAndAssert(page)
+
+      await page.locator('#field-title').fill('scheduled publish updated')
+
+      await waitForAutoSaveToRunAndComplete(page)
+
+      await page.locator('#action-save-popup').click()
+
+      await expect(async () => {
+        await expect(page.locator('#schedule-publish')).toBeVisible()
+      }).toPass({
+        timeout: POLL_TOPASS_TIMEOUT,
+      })
+    })
   })
 
   describe('Collections - publish specific locale', () => {