Sync: Bug fix checksum histogram loop when max range is PHP_INT_MAX (…

…#40309)

* Ensure we don't add 1 if range is PHP_INT_MAX and try to compare it.

* changelog

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/12050817286

Upstream-Ref: Automattic/jetpack@b11c20a

composer.json

@@ -11,7 +11,7 @@
 		"automattic/jetpack-plans": "^0.5.1",
 		"automattic/jetpack-redirect": "^3.0.1",
 		"automattic/jetpack-status": "^5.0.1",
-		"automattic/jetpack-sync": "^4.0.1"
+		"automattic/jetpack-sync": "^4.0.2-alpha"
 	},
 	"require-dev": {
 		"yoast/phpunit-polyfills": "^1.1.1",