TF-3889 Fix cannot see input when typing email body with attachments on mobile

Signed-off-by: dab246 <tdvu@linagora.com>

lib/features/composer/presentation/composer_view.dart

@@ -101,6 +101,11 @@ class ComposerView extends GetWidget<ComposerController> {
                       physics: const ClampingScrollPhysics(),
                       child: Column(
                         crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          Column(
+                            key: controller.headerEditorMobileWidgetKey,
+                            crossAxisAlignment: CrossAxisAlignment.start,
+                            mainAxisSize: MainAxisSize.min,
                             children: [
                               Obx(() {
                                 if (controller.fromRecipientState.value == PrefixRecipientState.enabled) {
@@ -254,7 +259,9 @@ class ComposerView extends GetWidget<ComposerController> {
                                   viewState: controller.viewState.value,
                                   margin: ComposerStyle.insertImageLoadingBarMargin,
                                 ),
-                          )),
+                              ))
+                            ],
+                          ),
                           Obx(() => Padding(
                             padding: ComposerStyle.mobileEditorPadding,
                             child: MobileEditorView(