fixed warnings after update

refilc/lib/database/struct.dart

@@ -8,10 +8,10 @@ class DatabaseStruct {
     String typeName = "";
 
     switch (type.runtimeType) {
-      case int:
+      case const (int):
         typeName = "integer";
         break;
-      case String:
+      case const (String):
         typeName = "text";
         break;
     }

refilc/lib/theme/theme.dart

@@ -125,8 +125,6 @@ class AppTheme {
         onTertiary:
             (newTertiary.computeLuminance() > 0.5 ? Colors.black : Colors.white)
                 .withOpacity(.9),
-        background: highlightColor,
-        onBackground: Colors.black.withOpacity(.9),
         brightness: Brightness.light,
         error: lightColors.red,
         onError: Colors.white.withOpacity(.9),
@@ -141,9 +139,9 @@ class AppTheme {
         indicatorColor:
             accent.withOpacity(accentColor == AccentColor.adaptive ? 0.4 : 0.8),
         iconTheme:
-            MaterialStateProperty.all(IconThemeData(color: lightColors.text)),
+            WidgetStateProperty.all(IconThemeData(color: lightColors.text)),
         backgroundColor: highlightColor,
-        labelTextStyle: MaterialStateProperty.all(TextStyle(
+        labelTextStyle: WidgetStateProperty.all(TextStyle(
           fontSize: 13.0,
           fontWeight: FontWeight.w500,
           color: lightColors.text.withOpacity(0.8),
@@ -250,8 +248,6 @@ class AppTheme {
         onTertiary:
             (newTertiary.computeLuminance() > 0.5 ? Colors.black : Colors.white)
                 .withOpacity(.9),
-        background: highlightColor,
-        onBackground: Colors.white.withOpacity(.9),
         brightness: Brightness.dark,
         error: darkColors.red,
         onError: Colors.black.withOpacity(.9),
@@ -266,9 +262,9 @@ class AppTheme {
         indicatorColor:
             accent.withOpacity(accentColor == AccentColor.adaptive ? 0.4 : 0.8),
         iconTheme:
-            MaterialStateProperty.all(IconThemeData(color: darkColors.text)),
+            WidgetStateProperty.all(IconThemeData(color: darkColors.text)),
         backgroundColor: highlightColor,
-        labelTextStyle: MaterialStateProperty.all(TextStyle(
+        labelTextStyle: WidgetStateProperty.all(TextStyle(
           fontSize: 13.0,
           fontWeight: FontWeight.w500,
           color: darkColors.text.withOpacity(0.8),

refilc/lib/ui/filter/widgets.dart

@@ -259,7 +259,7 @@ Widget filterItemBuilder(
                     ? const EdgeInsets.symmetric(vertical: 8.0)
                     : const EdgeInsets.symmetric(vertical: 4.0),
                 decoration: BoxDecoration(
-                  color: Theme.of(context).colorScheme.background,
+                  color: Theme.of(context).colorScheme.surface,
                   borderRadius: BorderRadius.vertical(
                     top: separated || isAfterSeparated
                         ? const Radius.circular(16.0)

refilc/lib/ui/flutter_colorpicker/palette.dart

@@ -364,7 +364,7 @@ class ColorPickerInputState extends State<ColorPickerInput> {
           controller: textEditingController,
           style: TextStyle(
             fontSize: 18,
-            color: Theme.of(context).colorScheme.onBackground,
+            color: Theme.of(context).colorScheme.onSurface,
           ),
           inputFormatters: [
             UpperCaseTextFormatter(),