[S32::Containers] Changed the *default* default default KeyHash value…

… to Any.

S02 says the default default value is sensitive to the value type of the KeyHash. If the default value type of a KeyHash is Any, which seems logical to me, then the default default default value should be a prototype Any, not 0.

S32-setting-library/Containers.pod

@@ -1012,7 +1012,7 @@ A mutable C<Bag> container, represented as C<KeyHash of UInt>.
 
 =head2 KeyHash
 
-    role KeyHash[::T $t, $default = 0] does Associative {...}
+    role KeyHash[::T, $default = Any] does Associative {...}
 
 A C<KeyHash> represents a mutable set of values, represented as the keys
 of a C<Hash>.  When asked to behave as a list it ignores its values