Add tests case for function check type being correctly paranthesized in quick info (#48836)

tests/cases/fourslash/quickInfoFunctionCheckType.ts

@@ -0,0 +1,6 @@
+///<reference path="fourslash.ts" />
+
+////export type /**/Tail<T extends any[]> = ((...t: T) => void) extends (h: any, ...rest: infer R) => void ? R : never;
+
+verify.quickInfoAt("", "type Tail<T extends any[]> = ((...t: T) => void) extends (h: any, ...rest: infer R) => void ? R : never");
+