fix(app): align markdown task checkboxes

packages/session-ui/src/components/markdown.css

@@ -116,6 +116,20 @@
     margin-bottom: 8px;
   }
 
+  li:has(> input[type="checkbox"]),
+  li:has(> p:first-child > input[type="checkbox"]:first-child) {
+    position: relative;
+    list-style-type: none;
+  }
+
+  li > input[type="checkbox"],
+  li > p:first-child > input[type="checkbox"]:first-child {
+    position: absolute;
+    top: 0.2em;
+    left: -1.25rem;
+    margin: 0;
+  }
+
   li > p:first-child {
     display: inline;
     margin: 0;