adding missing const

frontend/lib/modules/onbarding_agreement_card.dart

@@ -13,8 +13,8 @@ class OnboardingAgreementCard extends StatefulWidget {
   final ValueChanged<bool> onAgreementChanged;
 
 
-  OnboardingAgreementCard({
-    super.key, 
+  const OnboardingAgreementCard({
+    super.key,
     required this.title,
     required this.description,
     required this.imagePath,
@@ -30,12 +30,12 @@ class _OnboardingAgreementCardState extends State<OnboardingAgreementCard> {
   @override
   Widget build(BuildContext context) {
     return Padding(
-      padding: EdgeInsets.all(20),
+      padding: const EdgeInsets.all(20),
       child: Column(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
           OnboardingCard(title: widget.title, description: widget.description, imagePath: widget.imagePath),
-          Padding(padding: EdgeInsets.only(top: 20)),
+          const Padding(padding: EdgeInsets.only(top: 20)),
           Row(
             mainAxisAlignment: MainAxisAlignment.center,
             children: [
@@ -65,7 +65,7 @@ class _OnboardingAgreementCardState extends State<OnboardingAgreementCard> {
                   );
                 },
               ),
-              
+
               // The text of the agreement
               Text(
                 "I agree to the ",
@@ -73,7 +73,7 @@ class _OnboardingAgreementCardState extends State<OnboardingAgreementCard> {
                   color: Colors.white,
                 ),
               ),
-              
+
               // The clickable text of the agreement that shows the agreement text
               GestureDetector(
                 onTap: () {
@@ -91,9 +91,9 @@ class _OnboardingAgreementCardState extends State<OnboardingAgreementCard> {
                                 data: snapshot.data.toString(),
                               );
                             } else {
-                              return CircularProgressIndicator();
+                              return const CircularProgressIndicator();
                             }
-                            
+
                           },
                         )
                       );