Fix Code Block Styles in Editor (Light Mode)

[0010aor]

Description

Address visual and usability issues specifically with code blocks in the card editor when the application is in light mode. The current styling of code blocks may result in poor contrast, low readability, or inconsistent appearance compared to dark mode and the rest of the editor.

Current Behavior

• Code blocks in the editor in light mode may have insufficient contrast between text and background.
• Code block borders, background, or font colors may not be clearly visible or aesthetically pleasing.
• The appearance of code blocks may not match the intended design for light mode or may differ from dark mode.

Expected Behavior

• Code blocks should have high contrast and excellent readability in light mode.
• All code block elements (background, borders, text) are clearly visible and visually appealing.
• The styling of code blocks is consistent with the application's design system for light mode and matches the quality of dark mode.
• No visual glitches or accessibility issues are present for code blocks in the editor when using light mode.