CI4 Sheild, cookie expiration change not working

I'm using CI4 with Shield. I want the session to stay active indefinitely. In Config\Session.php I set the "expiration" and "timeToUpdate" properties to 60 * 60 * 24 * 365 (I also tried setting to 0). However, the cookie "ci_session" that gets created has an expiration of the same day still. How do I actually change that?

Action: Set Config\Session->expiration = 60 * 60 * 24 * 365

Expectation: I expected the ci_session cookie to be created with an expiration date of next year.

Result: ci_session cookie is created with same day expiration still.

Cannot reproduce.
I get a cookie like this:

Code:

ci_session=11f0a0pefejn9bcs34ktlajce8dpjh07; expires=Tue, 26 Aug 2025 22:55:19 GMT; Max-Age=31536000; path=/; HttpOnly; SameSite=Lax

PHP Code:

--- a/app/Config/Session.php
+++ b/app/Config/Session.php
@@ -40,7 +40,7 @@ class Session extends BaseConfig
      * The number of SECONDS you want the session to last.
      * Setting to 0 (zero) means expire when the browser is closed.
      */
-    public int $expiration = 7200;
+    public int $expiration = 60 * 60 * 24 * 365;

    /**
      * -------------------------------------------------------------------------- 


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