use Context.environment instead of Foundation

Author: sliemeobn

Package.swift

@@ -1,10 +1,9 @@
 // swift-tools-version:5.8
 
 import PackageDescription
-import Foundation
 
 // NOTE: needed for embedded customizations, ideally this will not be necessary at all in the future, or can be replaced with traits
-let shouldBuildForEmbedded = ProcessInfo.processInfo.environment["JAVASCRIPTKIT_EXPERIMENTAL_EMBEDDED_WASM"].flatMap(Bool.init) ?? false
+let shouldBuildForEmbedded = Context.environment["JAVASCRIPTKIT_EXPERIMENTAL_EMBEDDED_WASM"].flatMap(Bool.init) ?? false
 
 let package = Package(
     name: "JavaScriptKit",