[tests] add test for #9430 (#11969)

tests/misc/projects/Issue9430/Main.hx

@@ -0,0 +1,9 @@
+class A {
+	static var A:Int;
+}
+
+class Main {
+	static function main() {
+		A.A;
+	}
+}

tests/misc/projects/Issue9430/compile-fail.hxml

@@ -0,0 +1,3 @@
+-main Main
+-D message.reporting=pretty
+-D message.no-color

tests/misc/projects/Issue9430/compile-fail.hxml.stderr

@@ -0,0 +1,6 @@
+[ERROR] Main.hx:7: characters 5-6
+
+ 7 |   A.A;
+   |     ^
+   | Cannot access private field A
+