Add comments marking shareTables project attributes + header overrides as temporary

app/config/collections.php

@@ -3269,6 +3269,7 @@ $consoleCollections = array_merge([
                 'filters' => [],
             ],
             [
+                // To be removed once all project are using shared tables
                 '$id' => ID::custom('shareTables'),
                 'type' => Database::VAR_BOOLEAN,
                 'format' => '',

app/controllers/api/projects.php

@@ -144,7 +144,7 @@ App::post('/v1/projects')
         // One in 20 projects use shared tables
         $shareTables = !\mt_rand(0, 19);
 
-        // Allow overriding in development mode
+        // Allow overriding in development mode, to be removed once all project are using shared tables
         if (App::isDevelopment()) {
             $shareTables = (bool) $request->getHeader('x-appwrite-share-tables', false);
         }