fix(tip): hide page back button

src/app/tip/tip-screen.tsx

@@ -2,7 +2,7 @@
 
 import { useEffect, useMemo, useState, type CSSProperties } from "react";
 import Image from "next/image";
-import { ArrowLeft, Heart, Sparkles } from "lucide-react";
+import { Heart, Sparkles } from "lucide-react";
 
 import { CharacterAvatar } from "@/app/_components";
 import { MobileShell } from "@/app/_components/core";
@@ -206,10 +206,6 @@ export function TipScreen({
     }
   };
 
-  const handleBack = () => {
-    navigator.back();
-  };
-
   const handleResetPaidState = () => {
     paymentDispatch({ type: "PaymentReset" });
   };
@@ -229,16 +225,6 @@ export function TipScreen({
         <div className={styles.bgGlowTwo} aria-hidden="true" />
 
         <header className={styles.header}>
-          <button
-            type="button"
-            data-analytics-key="tip.back"
-            data-analytics-label="Go back from tip"
-            className={styles.backButton}
-            aria-label="Go back"
-            onClick={handleBack}
-          >
-            <ArrowLeft size={19} aria-hidden="true" />
-          </button>
           <span className={styles.headerPill}>{character.copy.tipHeader}</span>
         </header>