fix(themes): add base HC and HCD

Author: thetaPC

core/src/themes/base/default.tokens.ts

@@ -1,6 +1,8 @@
 import type { DefaultTheme } from '../themes.interfaces';
 
 import { darkTheme } from './dark.tokens';
+import { highContrastDarkTheme } from './high-contrast-dark.tokens';
+import { highContrastTheme } from './high-contrast.tokens';
 import { lightTheme } from './light.tokens';
 
 export const defaultTheme: DefaultTheme = {
@@ -9,6 +11,8 @@ export const defaultTheme: DefaultTheme = {
   palette: {
     light: lightTheme,
     dark: darkTheme,
+    highContrast: highContrastTheme,
+    highContrastDark: highContrastDarkTheme,
   },
 
   config: {