Super Cache: check for the same Boost that the plugin later tries to …

…install (#37896)

* Detect Boost in the public install directory.

* This is because the activation code tries to activate
  jetpack-boost/jetpack-boost.php

* changelog

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/9549407550

Upstream-Ref: Automattic/jetpack@ee9aedc

CHANGELOG.md

@@ -18,6 +18,7 @@ This is an alpha version! The changes listed here are not final.
 - Updated package dependencies.
 
 ### Fixed
+- Super Cache: Align detection of Boost installs with activation of that plugin
 - Super Cache: make sure plugins links is an array before using it.
 - Super Cache: remove the preload interval based on the post count. Preload as often as you want.
 

wp-cache.php

@@ -339,7 +339,7 @@ function wpsc_is_boost_installed() {
 	$plugins = array_keys( get_plugins() );
 
 	foreach ( $plugins as $plugin ) {
-		if ( str_contains( $plugin, 'jetpack-boost.php' ) ) {
+		if ( str_contains( $plugin, 'jetpack-boost/jetpack-boost.php' ) ) {
 			return true;
 		}
 	}