Allow drafts to be created without requiring a collection (#4175)

* feat(server): allow document to be created without collectionId

* fix(server): policies for a draft doc without collection

* fix(app): hide share button for drafts

* feat(server): permissions around publishing a draft

* fix(server): return drafts without collection

* fix(server): handle draft deletion

* fix(server): show drafts in deleted docs

* fix(server): allow drafts without collection to be restored

* feat(server): return drafts in search results

* fix: use buildDraftDocument for drafts

* fix: remove isDraftWithoutCollection

* fix: do not return drafts for team

* fix: put invariants

* fix: query clause

* fix: check only for undefined

* fix: restore includeDrafts clause as it was before

server/routes/api/hooks.ts

@@ -85,7 +85,7 @@ router.post("hooks.unfurl", async (ctx) => {
     unfurls[link.url] = {
       title: doc.title,
       text: doc.getSummary(),
-      color: doc.collection.color,
+      color: doc.collection?.color,
     };
   }
 
@@ -131,8 +131,8 @@ router.post("hooks.interactive", async (ctx) => {
     attachments: [
       presentSlackAttachment(
         document,
-        document.collection,
         team,
+        document.collection,
         document.getSummary()
       ),
     ],
@@ -303,8 +303,8 @@ router.post("hooks.slack", async (ctx) => {
       attachments.push(
         presentSlackAttachment(
           result.document,
-          result.document.collection,
           team,
+          result.document.collection,
           queryIsInTitle ? undefined : result.context,
           env.SLACK_MESSAGE_ACTIONS
             ? [