Improve back button function in all screens

lib/widgets/CycleScreens/Result/banner.dart

@@ -34,7 +34,7 @@ class ResultBanner extends StatelessWidget {
           InkWell(
             customBorder: CircleBorder(),
             onTap: () {
-              Navigator.of(context).popAndPushNamed(push);
+              Navigator.of(context).pushNamed(push);
             },
             child: Container(
               padding: EdgeInsets.all(5),

lib/widgets/LabelScreens/Result/floating_buttons.dart

@@ -41,7 +41,7 @@ class LabelFloatingButtons extends StatelessWidget {
         InkWell(
           customBorder: CircleBorder(),
           onTap: () {
-            Navigator.of(context).pushReplacementNamed(Routes.labelAddScreen);
+            Navigator.of(context).pushNamed(Routes.labelAddScreen);
           },
           child: Container(
             padding: EdgeInsets.all(5),

lib/widgets/TestResultScreens/Main/floating_button.dart

@@ -41,8 +41,7 @@ class TestResultFloatingButton extends StatelessWidget {
         InkWell(
           customBorder: CircleBorder(),
           onTap: () {
-            Navigator.of(context)
-                .pushReplacementNamed(Routes.testResultAddScreen);
+            Navigator.of(context).pushNamed(Routes.testResultAddScreen);
           },
           child: Container(
             padding: EdgeInsets.all(_deviceBlockSize),