home: Add Text label below Icons using Flexible

Introduced Flexible instead of Expandible To make
sure Text widget cover only required area not
till maxheight of ConstrainedBox.

Author: MritunjayTiwari14

lib/widgets/home.dart

@@ -268,6 +268,16 @@ class _NavigationBarButton extends StatelessWidget {
               SizedBox(height: 34,
                 child: Center(
                   child: Icon(icon, size: 24, color: color,))),
+              Flexible(
+                child: Text(
+                  label,
+                  style: TextStyle(
+                    fontSize: 12,
+                    color: color,
+                    height: 1.0,),
+                  textAlign: TextAlign.center,
+                  maxLines: 2,
+                  overflow: TextOverflow.ellipsis)),
             ]))));
   }
 }