home: Enable partial_subscribers in web app.

Fixed #34244.

zerver/lib/home.py

@@ -1,5 +1,4 @@
 import calendar
-import os
 import time
 from dataclasses import dataclass
 from urllib.parse import urlsplit
@@ -110,7 +109,7 @@ def build_page_params_for_home_page_load(
     if user_profile is not None:
         client = RequestNotes.get_notes(request).client
         assert client is not None
-        partial_subscribers = os.environ.get("PARTIAL_SUBSCRIBERS") is not None
+        partial_subscribers = True
         state_data = do_events_register(
             user_profile,
             realm,

zerver/lib/subscription_info.py

@@ -898,8 +898,9 @@ def gather_subscriptions_helper(
         }
 
         # If the client only wants partial subscriber data, we send:
-        # - all subscribers (full data) for channels with fewer than 250 subscribers
-        # - only bots and recently active users for channels with >= 250 subscribers
+        # - all subscribers (full data) for channels with fewer than
+        #   MIN_PARTIAL_SUBSCRIBERS_CHANNEL_SIZE subscribers.
+        # - only bots and recently active users for other channels.
         streams_to_partially_fetch = []
         if include_subscribers == "partial":
             streams_to_partially_fetch = [

zproject/default_settings.py

@@ -741,4 +741,4 @@ SCIM_CONFIG: dict[str, SCIMConfigDict] = {}
 
 # Minimum number of subscribers in a channel for us to no longer
 # send full subscriber data to the client.
-MIN_PARTIAL_SUBSCRIBERS_CHANNEL_SIZE = 250
+MIN_PARTIAL_SUBSCRIBERS_CHANNEL_SIZE = 1000