Updates query for threads

Previous query incorrectly pulled and sorted posts, often showing years
old posts from newly followed people. This now behaves more consistently
as "recent threads from people in your extended network".

src/models.js

@@ -936,12 +936,22 @@ module.exports = ({ cooler, isPublic }) => {
 
       const myFeedId = ssb.id;
 
-      const options = configure({
-        type: "post",
-        private: false,
-      });
-
-      const source = ssb.messagesByType(options);
+      const source = ssb.query.read(
+        configure({
+          query: [
+            {
+              $filter: {
+                value: {
+                  timestamp: { $lte: Date.now() },
+                  content: {
+                    type: "post",
+                  },
+                },
+              },
+            },
+          ],
+        })
+      );
 
       const messages = await new Promise((resolve, reject) => {
         pull(