Add M3's tall navigation bar

Plan step 25 (navigation Missing): NavigationBarTokens.TallContainerHeight,
80dp, had no prop. `<x-navigation-bar tall>` picks it, and the tall container
keeps the vertical item layout at every width — the 600px horizontal layout is
the short bar's alone, so every rule behind that container query now names
`:not([data-tall])`. `<x-app-shell tall-bar>` passes it through and grows
`--material-bottom-bar` to 5rem with it.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9

resources/views/showcase/sections/navigation.blade.php

@@ -29,6 +29,21 @@
                         </div>
                     </div>
                 </div>
+
+                <div class="max-w-[50rem] space-y-2">
+                    <p class="type-label-lg text-on-surface-variant">Tall (80px): icon over label whatever the width</p>
+                    <div class="overflow-x-auto rounded-corner-lg border border-outline-variant">
+                        <div class="flex h-56 min-w-[37.5rem] flex-col bg-surface">
+                            <div class="flex-1 p-4 type-body-md text-on-surface-variant">The page</div>
+                            <x-navigation-bar tall>
+                                <x-navigation-bar-item label="Shares" icon="folder_shared" link="#navigation" no-wire-navigate active />
+                                <x-navigation-bar-item label="Upload" icon="upload" link="#navigation" no-wire-navigate />
+                                <x-navigation-bar-item label="Inbox" icon="inbox" link="#navigation" no-wire-navigate badge="3" />
+                                <x-navigation-bar-item label="Account" icon="account_circle" link="#navigation" no-wire-navigate />
+                            </x-navigation-bar>
+                        </div>
+                    </div>
+                </div>
             </div>
             BLADE,
         'Collapsed and expanded rails' => <<<'BLADE'