[MNG-7726] Maven 3.9.0 resolves properties in file profile activation…

… incorrectly (#1053)

There was a typo: the stream contains entries, so e.getKey and
e.getValue is needed.

---

https://issues.apache.org/jira/browse/MNG-7726

maven-model-builder/src/main/java/org/apache/maven/model/profile/DefaultProfileActivationContext.java

@@ -197,7 +197,7 @@ public DefaultProfileActivationContext setProjectProperties(Properties projectPr
         if (projectProperties != null) {
             this.projectProperties = projectProperties.entrySet().stream()
                     .collect(collectingAndThen(
-                            toMap(k -> String.valueOf(k.getKey()), v -> String.valueOf(v)),
+                            toMap(e -> String.valueOf(e.getKey()), e -> String.valueOf(e.getValue())),
                             Collections::unmodifiableMap));
         } else {
             this.projectProperties = Collections.emptyMap();