chore(ios): Bump iOS binary size threshold for JS SDK 10.53.1

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: antonis

performance-tests/metrics-ios.yml

@@ -11,4 +11,4 @@ startupTimeTest:
 
 binarySizeTest:
   diffMin: 600 KiB
-  diffMax: 1560 KiB
+  diffMax: 1570 KiB