refactor(ui): replace chevron icons with arrow icon variants

- swap `ChevronDownIcon` and `ChevronRightIcon` for `ArrowDown01Icon` and `ArrowRight01Icon` in AdminSidebar and AdminTop
- add `ArrowDown01Icon`, `ArrowLeft01Icon`, `ArrowRight01Icon`, and `ArrowUp01Icon` to shared icons index
- remove `ChevronDownIcon` and `ChevronRightIcon` from shared icons index

src/features/admin/components/AdminSidebar.js

@@ -4,7 +4,7 @@ import React, { useState, useEffect } from 'react';
 import Link from 'next/link';
 import { usePathname } from 'next/navigation';
 import * as Icons from '@zen/core/shared/icons';
-import { ChevronDownIcon } from '@zen/core/shared/icons';
+import { ArrowDown01Icon } from '@zen/core/shared/icons';
 
 /**
  * Resolve icon name (string) to icon component
@@ -127,7 +127,7 @@ const AdminSidebar = ({ isMobileMenuOpen, setIsMobileMenuOpen, appName, enabledM
                         <Icon className="h-[15px] w-[15px] flex-shrink-0" />
                         <span>{section.title}</span>
                     </div>
-                    <ChevronDownIcon
+                    <ArrowDown01Icon
                         className={`h-3 w-3 transition-transform duration-[120ms] ease-out ${
                             isCollapsed ? '-rotate-90' : 'rotate-0'
                         }`}