Merge pull request #8576 from Microsoft/intersection_quick_info

Fix #7966: A non-anonymous type can still fail to have a symbol.

tests/cases/fourslash/getQuickInfoForIntersectionTypes.ts

@@ -0,0 +1,8 @@
+////function f(): string & {(): any} {
+////	return <any>{};
+////}
+////let x = f();
+////x/**/();
+
+goTo.marker();
+verify.quickInfoIs("let x: () => any");