Add test suites for Frontend files to bump overall coverage

[its-me-abhishek]

Several files in the React frontend currently have low (<90%) test coverage. We should work on improving coverage by adding or enhancing tests.

Guidelines

• Please open a separate PR for each file you work on.
• This issue will not be assigned to anyone.
• Before starting, comment on this issue with the file you’re working on to avoid overlap.
• Once ready, open a PR and reference this issue.
• Please do not create any functional changes to the parent file until any feature is broken

Files with Low Coverage (% Statements)

• main.tsx
• NavbarDesktop.tsx (HomeComponents)
• navbar-utils.ts (HomeComponents)
• NavbarMobile.tsx (LandingComponents)
• date-time-picker.tsx (ui, other files are generated by shadcn, can be skipped for now)
• multi-select.tsx (ui, other files are generated by shadcn, can be skipped for now)
• use-hotkeys.ts (src/components/utils)

Feel free to pick up any file from the list above. Thanks for helping improve our test coverage!

[tdevelope]

Hi! I'd like to work on writing tests for use-hotkeys.ts. I'll start working on it now.

[Anujsinghdevx]

Hi! I'd like to work on adding tests for navbar-utils.ts to improve frontend coverage.
Please let me know if that's okay — I’ll open a separate PR once done.

[its-me-abhishek]

sure @Anujsinghdevx, feel free to work on any file

[Rustix69]

@its-me-abhishek Should I pick up this issue too as i am working on the test coverage