🐛 Bug: Duplicate Language Options & Invisible Checkbox Tick in Dark Mode

[DARSHANCSE]

Describe the bug

The language filter dropdown contains duplicate entries for "JavaScript" and "TypeScript" due to inconsistent capitalization. Additionally, in dark mode, the checkbox tick is not clearly visible when an option is selected.

Steps To Reproduce

Duplicate Language Entries:
1.Open the language filter dropdown.
2.Scroll through the list.
3.Notice that "JavaScript" appears twice (e.g., "Javascript" vs. "JavaScript"), and "TypeScript" appears twice (e.g., "Typescript" vs. "TypeScript").

Invisible Checkbox Tick in Dark Mode:
1.Switch to dark mode.
2.Select any language from the filter.
3.The checkbox tick is barely visible due to low contrast.

Expected Behavior

✅ No duplicate entries in the language filter dropdown.
✅ Clearly visible checkbox tick in dark mode.

Screenshots

Device Information [optional]

- OS:
- Browser:
- version:

Are you working on this issue?

Yes

Do you think this work might require an [Architectural Decision Record (ADR)]? (significant or noteworthy)

No

[github-actions]

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