docs(docs): add page icon frontmatter to problem pages

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Prad Nukala committed 2026-09-25 13:14:25 -04:00
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---
title: '102. Binary Tree Level Order Traversal'
description: Given the root of a binary tree, return the level order traversal of its nodes' values. (i.e., from left to right, level by level)
icon: line-dot-left-horizontal
sidebar:
label: 'Binary Tree Level Order Traversal'
badge: 'Medium'