move passing stage1 compile error tests to stage2

test/cases/compile_errors/switch_expression-missing_enumeration_prong.zig

@@ -0,0 +1,23 @@
+const Number = enum {
+    One,
+    Two,
+    Three,
+    Four,
+};
+fn f(n: Number) i32 {
+    switch (n) {
+        Number.One => 1,
+        Number.Two => 2,
+        Number.Three => @as(i32, 3),
+    }
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(&f)); }
+
+// error
+// backend=stage2
+// target=native
+//
+// :8:5: error: switch must handle all possibilities
+// :8:5: note: unhandled enumeration value: 'Four'
+// :1:16: note: enum 'tmp.Number' declared here