feat(forms): make textarea monospace opt-in and improve multiline toggle

Add `monospace` prop to Textarea component so font-mono is no longer
applied by default. Apply it explicitly to env variable editors, private
key fields, and shared variable forms where monospace is appropriate.

Use Alpine.js x-data/x-model to make the multiline toggle reactive
without a full Livewire round-trip. Add wire:key on the input/textarea
wrappers to force proper DOM replacement when switching modes.

app/View/Components/Forms/Textarea.php

@@ -32,10 +32,11 @@ class Textarea extends Component
         public bool $allowTab = false,
         public bool $spellcheck = false,
         public bool $autofocus = false,
+        public bool $monospace = false,
         public ?string $helper = null,
         public bool $realtimeValidation = false,
         public bool $allowToPeak = true,
-        public string $defaultClass = 'input scrollbar font-mono',
+        public string $defaultClass = 'input scrollbar',
         public string $defaultClassInput = 'input',
         public ?int $minlength = null,
         public ?int $maxlength = null,
@@ -81,6 +82,10 @@ class Textarea extends Component
             $this->name = $this->modelBinding !== 'null' ? $this->modelBinding : (string) $this->id;
         }
 
+        if ($this->monospace) {
+            $this->defaultClass .= ' font-mono';
+        }
+
         // $this->label = Str::title($this->label);
         return view('components.forms.textarea');
     }