Add match guard chains test for absence of compilation error

based on tests/ui/rfcs/rfc-2497-if-let-chains/temporary-early-drop.rs

Author: est31

tests/ui/rfcs/rfc-2294-if-let-guard/temporary-early-drop.rs

@@ -0,0 +1,29 @@
+// issue-103476
+//@ revisions: edition2021 edition2024
+//@ [edition2021] edition: 2021
+//@ [edition2024] edition: 2024
+//@ check-pass
+
+#![feature(if_let_guard)]
+#![allow(irrefutable_let_patterns)]
+
+struct Pd;
+
+impl Pd {
+    fn it(&self) -> It {
+        todo!()
+    }
+}
+
+pub struct It<'a>(Box<dyn Tr<'a>>);
+
+trait Tr<'a> {}
+
+fn f(m: Option<Pd>) {
+    match () {
+        () if let Some(n) = m && let it = n.it() => {}
+        _ => {}
+    }
+}
+
+fn main() {}