feat: Update color scheme for edx App

[omerhabib26]

Description:

• Update color scheme according to new edx designs

[HamzaIsrar12]

Things to Look Into

Light Mode:

• "Switch to Limited Profile" button on Edit Profile
• Course Progress Bar on Primary View and Home
• Download Videos Icon Color
• Course Calendar Dialog Buttons
• Check Mark Color on Value Prop

Dark Mode:

• "Switch to Limited Profile" Button on Edit Profile
• Course Progress Bar on Primary View and Home
• Download Videos Icon Color
• Course Calendar Dialog Buttons
• "You Must Be Over 13 ..." Snackbar Text Color
• Progress Bar on Component Screen
• Text color on the Primary Course Card background (dark_surface) and other areas where dark_surface is used as the background

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Please remove the fitsSystemWindows attribute, as it conflicts with the Next and Previous buttons on the course component.

[HamzaIsrar12]

Thank you for the changes. 🏎️