Add regression test

Author: ahejlsberg

tests/cases/compiler/badInferenceLowerPriorityThanGoodInference.ts

@@ -1,3 +1,5 @@
+// Repro from #13118
+
 interface Foo<A> {
     a: A;
     b: (x: A) => void;
@@ -10,4 +12,11 @@ const result = canYouInferThis(() => ({
     b: x => { }
 }))
 
-result.BLAH;
+result.BLAH;
+
+// Repro from #26629
+
+function goofus <ARGS extends any[]> (f: (...args: ARGS) => any ) {}
+
+goofus((a: string) => ({ dog() { return a; } }));
+goofus((a: string) => ({ dog: function() { return a; } }));