feat: limit message link previews count (#15214)

src/app/modules/main/chat_section/chat_content/input_area/controller.nim

@@ -13,6 +13,8 @@ import ../../../../../core/eventemitter
 import ../../../../../core/unique_event_emitter
 import ./link_preview_cache
 
+const MESSAGE_LINK_PREVIEWS_LIMIT = 5
+
 type
   Controller* = ref object of RootObj
     delegate: io_interface.AccessInterface
@@ -195,6 +197,9 @@ proc handleUnfurlingPlan*(self: Controller, unfurlNewUrls: bool) =
         allAllowedUrls.add(metadata.url)
       continue
 
+    if allAllowedUrls.len == MESSAGE_LINK_PREVIEWS_LIMIT:
+      continue
+
     # Split unfurling into 2 packs, which will be different RPCs.
     # In most cases we expect status links to ufurl immediately.
     # In future we could unfurl each link in a separate RPC,