name hin text take null, ifg null then dont display hint

Frontend/lib/mih_components/mih_package_components/mih_text_form_field.dart

@@ -9,7 +9,7 @@ class MihTextFormField extends StatefulWidget {
   final Color inputColor;
   final TextEditingController controller;
   final bool? hasError;
-  final String hintText;
+  final String? hintText;
   final double? borderRadius;
   final bool? multiLineInput;
   final bool? readOnly;
@@ -98,11 +98,13 @@ class _MihTextFormFieldState extends State<MihTextFormField> {
           child: Column(
             crossAxisAlignment: CrossAxisAlignment.start,
             children: [
-              Row(
+              Visibility(
+                visible: widget.hintText != null,
+                child: Row(
                   mainAxisAlignment: MainAxisAlignment.spaceBetween,
                   children: [
                     Text(
-                    widget.hintText,
+                      widget.hintText ?? "",
                       textAlign: TextAlign.left,
                       style: TextStyle(
                         color: widget.fillColor,
@@ -124,6 +126,7 @@ class _MihTextFormFieldState extends State<MihTextFormField> {
                     ),
                   ],
                 ),
+              ),
               const SizedBox(height: 4),
               FormField<String>(
                 initialValue: widget.controller.text,