style: fix modal UI light mode and enhance animation

[ahnafalfariza]

Pre-flight checklist

• I have read the Contributing Guidelines on pull requests.
• Commit messages follow the conventional commits spec
• If this is a code change: I have written unit tests.
• If this changes code in a published package: I have run pnpm changeset to create a changeset JSON document appropriate for this change.
• If this is a new API or substantial change: the PR has an accompanying issue (closes #0000) and the maintainers have approved on my working plan.

Motivation

This PR addresses visual improvements for the wallet selector modal, focusing on light mode styling fixes and enhanced opening/closing animations for a smoother user experience

• Light mode fixes

before	after

• Add animations for opening and closing the modal

Screen.Recording.2025-12-03.at.20.16.09.mov

[changeset-bot]

🦋 Changeset detected

Latest commit: 79a5b6c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 31 packages

Name	Type
@near-wallet-selector/modal-ui-js	Patch
@near-wallet-selector/modal-ui	Patch
@near-wallet-selector/react-hook	Patch
@near-wallet-selector/arepa-wallet	Patch
@near-wallet-selector/bitget-wallet	Patch
@near-wallet-selector/bitte-wallet	Patch
@near-wallet-selector/coin98-wallet	Patch
@near-wallet-selector/core	Patch
@near-wallet-selector/ethereum-wallets	Patch
@near-wallet-selector/here-wallet	Patch
@near-wallet-selector/hot-wallet	Patch
@near-wallet-selector/intear-wallet	Patch
@near-wallet-selector/ledger	Patch
@near-wallet-selector/math-wallet	Patch
@near-wallet-selector/meteor-wallet-app	Patch
@near-wallet-selector/meteor-wallet	Patch
@near-wallet-selector/my-near-wallet	Patch
@near-wallet-selector/narwallets	Patch
@near-wallet-selector/near-mobile-wallet	Patch
@near-wallet-selector/near-snap	Patch
@near-wallet-selector/nightly	Patch
@near-wallet-selector/okx-wallet	Patch
@near-wallet-selector/ramper-wallet	Patch
@near-wallet-selector/safepal-wallet	Patch
@near-wallet-selector/sender	Patch
@near-wallet-selector/unity-wallet	Patch
@near-wallet-selector/wallet-connect	Patch
@near-wallet-selector/wallet-utils	Patch
@near-wallet-selector/webauthn-wallet	Patch
@near-wallet-selector/welldone-wallet	Patch
@near-wallet-selector/xdefi	Patch

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