fix: select checkbox (#35)

| Numéro du ticket | Titre du ticket |
|------------------|-----------------|
|                  |                 |

## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [ ] TU/TI/TF rédigée
- [ ] TU/TI/TF OK
- [ ] CHANGELOG modifié

Co-authored-by: kevin <kevin@yuno.malio.fr>
Co-authored-by: Kevin Boudet <kevin@yuno.malio.fr>
Reviewed-on: #35
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

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

@@ -26,6 +26,7 @@ type SelectCheckboxProps = {
   displaySelectAll?: boolean
   selectAllLabel?: string
   disabled?: boolean
+  groupClass?: string
 }
 
 const SelectCheckboxForTest = SelectCheckbox as DefineComponent<SelectCheckboxProps>
@@ -175,4 +176,21 @@ describe('MalioSelectCheckbox', () => {
     const checkboxes = wrapper.findAll('input[type="checkbox"]')
     expect((checkboxes[0].element as HTMLInputElement).checked).toBe(false)
   })
+
+  it('applies minWidth via twMerge so it overrides w-full (parity with MalioSelect)', () => {
+    const wrapper = mount(SelectCheckboxForTest, {
+      props: {modelValue: [], options: [], minWidth: 'w-80'},
+    })
+    const root = wrapper.find('button').element.parentElement
+    expect(root?.className).toContain('w-80')
+    expect(root?.className).not.toContain('w-full')
+  })
+
+  it('applies groupClass via twMerge', () => {
+    const wrapper = mount(SelectCheckboxForTest, {
+      props: {modelValue: [], options: [], groupClass: 'mt-4'},
+    })
+    const root = wrapper.find('button').element.parentElement
+    expect(root?.className).toContain('mt-4')
+  })
 })