M3: adjust yaru switch style

[Feichtmeier]

• borders are too aggressive
• wrong thumb colour
• due to constant border colour the size of the light switches jump when turning them off

[Feichtmeier]

Okay even if I remove the switch theme completely the border stays still wrong and unfixable

@jpnurmi can you understand from https://github.com/flutter/flutter/issues/103536 what we miss here? Is there a new general control border or something?

[Feichtmeier]

Ok got it rolling with

  return ThemeData.from(
    useMaterial3: true,
    colorScheme: ColorScheme.fromSeed(seedColor: YaruColors.orange),
  ).copyWith(
    dialogTheme: _createDialogTheme(Brightness.light),
    inputDecorationTheme:
        _createInputDecorationTheme(colorScheme, Brightness.light),
    toggleButtonsTheme: _createToggleButtonsTheme(colorScheme),
    textSelectionTheme: _createTextSelectionTheme(colorScheme),
    popupMenuTheme: _createPopupMenuThemeData(colorScheme, Brightness.light),
    tooltipTheme: _tooltipThemeData,
    buttonTheme: _buttonThemeData,
    outlinedButtonTheme: _outlinedButtonThemeData,
    elevatedButtonTheme:
        _getElevatedButtonThemeData(elevatedButtonColor ?? primaryColor),
    textButtonTheme: _textButtonThemeData,
  );

WIP