[ruby/prism] Inherit ractor state for child scopes

https://github.com/ruby/prism/commit/4576cb1d96

prism/prism.c

@@ -579,7 +579,7 @@ pm_parser_scope_push(pm_parser_t *parser, bool closed) {
         .locals = { 0 },
         .parameters = PM_SCOPE_PARAMETERS_NONE,
         .implicit_parameters = { 0 },
-        .shareable_constant = (closed || parser->current_scope == NULL) ? PM_SCOPE_SHAREABLE_CONSTANT_NONE : parser->current_scope->shareable_constant,
+        .shareable_constant = parser->current_scope == NULL ? PM_SCOPE_SHAREABLE_CONSTANT_NONE : parser->current_scope->shareable_constant,
         .closed = closed
     };