feat(ui) : prop required + aria-required + astérisque sur Select/SelectCheckbox/Upload/RichText

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/components/malio/select/Select.test.ts

@@ -21,6 +21,7 @@ type SelectProps = {
   textLabel?: string
   rounded?: string
   disabled?: boolean
+  required?: boolean
 }
 
 const SelectForTest = Select as DefineComponent<SelectProps>
@@ -260,6 +261,22 @@ describe('MalioSelect', () => {
     expect(wrapper.get('[data-test="chevron"]').classes()).toContain('text-m-success')
   })
 
+  it('affiche l\'astérisque quand required est vrai', () => {
+    const wrapper = mount(SelectForTest, {
+      props: {modelValue: null, label: 'Champ', required: true},
+    })
+
+    expect(wrapper.find('[data-test="required-mark"]').exists()).toBe(true)
+  })
+
+  it('n\'affiche pas l\'astérisque par défaut', () => {
+    const wrapper = mount(SelectForTest, {
+      props: {modelValue: null, label: 'Champ'},
+    })
+
+    expect(wrapper.find('[data-test="required-mark"]').exists()).toBe(false)
+  })
+
   it('keeps the bottom border allocation when open downward (transparent, not zero)', async () => {
     const wrapper = mount(SelectForTest, {
       props: {modelValue: null, options},