migrate project to plain js

[letmejustputthishere]

Overview
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Requirements
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Considered Solutions
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Recommended Solution
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Considerations
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[Copilot]

Pull Request Overview

This PR migrates a React frontend project from TypeScript to plain JavaScript, removing TypeScript configurations and type annotations throughout the codebase.

• Removes all TypeScript configuration files (tsconfig.json files)
• Converts TypeScript files (.tsx, .ts) to JavaScript files (.jsx, .js)
• Removes TypeScript type annotations and interfaces from all components and hooks

Reviewed Changes

Copilot reviewed 15 out of 20 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
motoko/nft-creator/tsconfig.json	Removes root TypeScript configuration file
motoko/nft-creator/frontend/tsconfig.json	Removes frontend TypeScript configuration file
motoko/nft-creator/frontend/src/types.ts	Removes TypeScript type definitions file
motoko/nft-creator/frontend/src/main.jsx	Removes TypeScript non-null assertion operator
motoko/nft-creator/frontend/src/index.css	Minor formatting change to CSS property line breaks
motoko/nft-creator/frontend/src/hooks/useQueries.js	Removes TypeScript type annotations and imports
motoko/nft-creator/frontend/src/hooks/useActor.js	Removes TypeScript type annotations and imports
motoko/nft-creator/frontend/src/contexts/ToastContext.tsx	Removes TypeScript version of ToastContext
motoko/nft-creator/frontend/src/contexts/ToastContext.jsx	Adds JavaScript version of ToastContext without type annotations
motoko/nft-creator/frontend/src/components/NFTCard.jsx	Removes TypeScript interfaces and type annotations
motoko/nft-creator/frontend/src/components/MintNFT.jsx	Adds error handling for invalid principals
motoko/nft-creator/frontend/src/App.tsx	Removes TypeScript version of App component
motoko/nft-creator/frontend/src/App.jsx	Adds JavaScript version of App component
motoko/nft-creator/frontend/package.json	Removes TypeScript dependencies and build step
motoko/nft-creator/frontend/index.html	Updates script reference from .tsx to .jsx

Files not reviewed (1)

• motoko/nft-creator/package-lock.json: Language not supported

Comments suppressed due to low confidence (1)

motoko/nft-creator/frontend/src/hooks/useQueries.js:25

• The removeToast function is referenced in the setTimeout callback before it's defined. This will cause a ReferenceError since removeToast is defined later in the component using useCallback.

        queryKey: ["collectionOwner"],