Draw a button's spinner in the button's own ink

The loading indicator inside a filled or tonal button was painted in
text-primary on a primary container — 1:1 contrast. M3 asks an indicator
embedded in another component to take that component's label colour, so the
button now passes text-current, which loading.blade.php reads as a caller
colour and leaves alone. Plan step 11, actions.md ACT-01.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9

resources/views/components/button.blade.php

@@ -24,7 +24,9 @@
      Behaviour kept from maryUI: `link` renders an anchor with `wire:navigate` (unless `external`
      or `no-wire-navigate`); `disabled` works on a link too, as `aria-disabled`; `spinner` shows
      the loading indicator while the button's own `wire:click` runs (or the action named by a
-     string); `responsive` hides the label below `expanded` (840px, where M3 lets buttons reposition);
+     string), drawn in the button's own ink — M3 asks an indicator embedded in another component
+     to take that component's label colour, so it stays visible on a filled or tonal container;
+     `responsive` hides the label below `expanded` (840px, where M3 lets buttons reposition);
      `tooltip`, `tooltip-left`, `tooltip-right`
      and `tooltip-bottom` attach a plain tooltip. `fab` is a page's create action: an extended FAB
      pinned in the thumb zone on a compact window (below `medium`, 600px), a filled button from
@@ -206,7 +208,7 @@
 <{{ $tag }} {{ $attributes }}>
     @if ($spinnerTarget)
         <span wire:loading.flex wire:target="{{ $spinnerTarget }}" class="items-center justify-center">
-            <x-livewire-material::loading :class="$iconSize" :label="false" />
+            <x-livewire-material::loading :class="$iconSize.' text-current'" :label="false" />
         </span>
     @endif