fix(frontend): fix mobile view of SettingsModal

[KianoshArian]

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Summarize what the PR does, explaining any non-trivial design decisions.

I tweaked some tailwind styles in order to fix the SettingsModal mobile view. The desktop view is unchanged. Please let me know if you have any suggestions on this matter.

Before	After

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How to run the changes locally Go to OpenHands/frontend directory Use npm run dev:mock to run the frontend project You should see the modal open in the home page. If not, go to Line 30 of /frontend/src/components/features/sidebar/sidebar.tsx and set the initial state value of settingsModalIsOpen to true:

const [settingsModalIsOpen, setSettingsModalIsOpen] = React.useState(false);

Change to:

const [settingsModalIsOpen, setSettingsModalIsOpen] = React.useState(true);