Enable dynamic import by default

Fixes #6231

Author: boingoing

lib/Common/ConfigFlagsList.h

@@ -702,7 +702,7 @@ PHASE(All)
 #define DEFAULT_CONFIG_ES7TrailingComma        (true)
 #define DEFAULT_CONFIG_ES7ValuesEntries        (true)
 #define DEFAULT_CONFIG_ESObjectGetOwnPropertyDescriptors (true)
-#define DEFAULT_CONFIG_ESDynamicImport         (false)
+#define DEFAULT_CONFIG_ESDynamicImport         (true)
 #define DEFAULT_CONFIG_ESImportMeta            (true)
 #define DEFAULT_CONFIG_ESExportNsAs            (true)
 #define DEFAULT_CONFIG_ES2018AsyncIteration    (false)