Make UtSymbolicExecution.copy method also copy containsMocking field

Author: IlyaMuravjov

utbot-framework-api/src/main/kotlin/org/utbot/framework/plugin/api/Api.kt

@@ -281,7 +281,9 @@ class UtSymbolicExecution(
         summary = summary,
         testMethodName = testMethodName,
         displayName = displayName
-    )
+    ).also {
+        it.containsMocking = containsMocking
+    }
 
     override fun toString(): String = buildString {
         append("UtSymbolicExecution(")
@@ -328,7 +330,9 @@ class UtSymbolicExecution(
         summary = summary,
         testMethodName = testMethodName,
         displayName = displayName
-    )
+    ).also {
+        it.containsMocking = containsMocking
+    }
 }
 
 /**