Allow spaces between the identifier and the translation when parsing ARB files

test/message_extraction/make_hardcoded_translation.dart

Index: test/message_extraction/make_hardcoded_translation.dart
diff --git a/test/message_extraction/make_hardcoded_translation.dart b/test/message_extraction/make_hardcoded_translation.dart
index af7d64d38ca8863fa2b7a00d5d176f2e34841fcb..4143fe8a7a268c45f58ed5fee7ac4396fb57a883 100644
--- a/test/message_extraction/make_hardcoded_translation.dart
+++ b/test/message_extraction/make_hardcoded_translation.dart
@@ -62,7 +62,7 @@ var french = {
       "}"
       "}",
   "outerPlural": "{n,plural, =0{rien}=1{un}other{quelques-uns}}",
-  "outerGender": "{g,select, male{homme}female{femme}other{autre}}",
+  "outerGender": "{g,select, male {homme} female {femme} other {autre}}",
   "pluralThatFailsParsing": "{noOfThings,plural, "
       "=1{1 chose:}other{{noOfThings} choses:}}",
   "nestedOuter": "{number,plural, other{"