refactor: use ADialog title attribute

src/components/images/ImagePickerDialog.vue

 <template>
-  <ADialog v-model="localIsOpen" is-modal class="tw-w-screen lg:tw-w-[60vw] tw-max-w-[800px]">
-    <template #header>
-      <p class="tw-text-lg tw-font-semibold tw-m-0">{{ t('imagePicker.title') }}</p>
-    </template>
-
+  <ADialog
+    v-model="localIsOpen"
+    is-modal
+    :title="t('imagePicker.title')"
+    class="tw-w-screen lg:tw-w-[60vw] tw-max-w-[800px]"
+  >
     <div
       v-if="!selectedImage && !showBrowser"
       class="tw-flex tw-flex-wrap tw-items-center tw-gap-2"