Not readable font-color and inconsistent border for selection.

[Kanatorabo]

Describe the bug
When selecting a week using the datepicker in "week-picker" mode together with "highlight-week-days". Then the selected week have on the highlighted days, the background color from the "highlight-week-days" and the font color from the selection and this combination is very hard to read. Additionally the selecting box does not wrap the Sunday.

To Reproduce
Steps to reproduce the behavior:

1. Add props :highlight-week-days="[0, 6]" week-picker
2. Select a week

Expected behavior
A better font color and the selecting should include the sunday

Screenshots

https://stackblitz.com/edit/vuepic-vue-datepicker-scuezg?file=src%2Fcomponents%2FPlayground.vue

Desktop & mobile (please complete the following information):

• Browser [chrome]
• Library version
  "dependencies": {
  "@vuepic/vue-datepicker": "^7.2.1",
  "vue": "^3.3.7"
  },
• locale: "de"
• timezone: "Europe/Berlin"