Better form and remove squares

Signed-off-by: Nikolai Rodionov <allanger@posteo.de>

lib/shared/ui/colors/light_mode.dart

@@ -11,6 +11,7 @@ class LightModeColors {
   // Inputs
   static const inputBackground = Color(0xFFFFFFFF);
   static const inputDefaultBorder = Color(0xFFD9D9D9);
+  static const inputHoverBorder = Color(0xFFC9CED6);
   static const inputFocusedBorder = Color(0xFFEFFF1A);
 
   // Text

lib/shared/ui/theme/app_theme.dart

@@ -72,10 +72,11 @@ class AppTheme {
             width: 1.0,
           ),
         ),
+        hoverColor: LightModeColors.inputBackground,
         enabledBorder: OutlineInputBorder(
           borderRadius: BorderRadius.all(Radius.circular(8.0)),
           borderSide: BorderSide(
-            color: LightModeColors.inputDefaultBorder,
+            color: LightModeColors.inputHoverBorder,
             width: 1.0,
           ),
         ),