fix: preserve cascade ordering without Clang 18 recursive-lambda compiler crash

Author: github-actions[bot]

.automation/native-cascade.patch

@@ -936,8 +936,12 @@ const scene &document::render(float width, float height) {
         ++order;
       }
     }
-    std::ranges::sort(declarations, {}, [](const auto &d) {
-      return std::tuple(d.important, d.specificity, d.order);
+    // Explicit iterator comparator avoids a Clang 18 concepts-instantiation
+    // crash for a projected ranges::sort inside this recursive generic lambda.
+    // Keep the same importance/specificity/source-order cascade key.
+    std::sort(declarations.begin(), declarations.end(), [](const candidate &a, const candidate &b) {
+      return std::tie(a.important, a.specificity, a.order) <
+             std::tie(b.important, b.specificity, b.order);
     });
     specified_variables local;
     for (const auto &d : declarations)