revert: leave max_attempts alone

sys.maxsize was the original bug, but only because solve_captcha was called
in a retry loop. That call is gone, so MAX_ATTEMPTS now only reaches
ClickSolver at construction and never bounds anything; the solve loop is
bounded by timer.remaining(). Reverting a change that no longer does
anything.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TDMac4vGGcBhoUB5V6bvFK

src/consts.py

@@ -1,4 +1,5 @@
 import logging
+import sys
 
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
@@ -9,7 +10,7 @@ class Settings(BaseSettings):
     log_level: str = "INFO"
     version: str = "unknown"
 
-    max_attempts: int = 5
+    max_attempts: int = sys.maxsize
 
     proxy_server: str | None = None
     proxy_username: str | None = None