Add regression test

Author: LeSeulArtichaut

src/test/ui/typeck/issue-69378-ice-on-invalid-type-node-after-recovery.rs

@@ -0,0 +1,9 @@
+// Regression test for #69378: no type for node after struct parse recovery
+
+struct Foo { 0: u8 } //~ ERROR expected identifier
+
+fn test(f: Foo) {
+    Foo{foo: 4, ..f};
+}
+
+fn main() {}

src/test/ui/typeck/issue-69378-ice-on-invalid-type-node-after-recovery.stderr

@@ -0,0 +1,8 @@
+error: expected identifier, found `0`
+  --> $DIR/issue-69378-ice-on-invalid-type-node-after-recovery.rs:3:14
+   |
+LL | struct Foo { 0: u8 }
+   |              ^ expected identifier
+
+error: aborting due to previous error
+