fix: resolve tslint errors and update all dependencies

TSLint fixes:
- Add braces to all single-line if/else bodies (curly rule)
- Add public visibility modifiers to ExternalStore members (member-access)
- Remove unnecessary semicolons from arrow function properties (semicolon)
- Add tslint:disable-next-line for react-dom/client submodule imports
- Rename shadowed variable in SourceCode.tsx (no-shadowed-variable)
- Use T[] syntax instead of Array<T> in types.ts (array-type)

Dependency updates:
- React 18 → 19, react-dom 18 → 19
- TypeScript 4.7 → 5.9
- webpack 5.73 → 5.105, webpack-cli 4 → 7
- css-loader 6 → 7, style-loader 3 → 4, sass-loader 13 → 16
- sass 1.53 → 1.98, ts-loader 9.3 → 9.5
- exports-loader 4 → 5, livereload 0.9 → 0.10
- @shaderfrog/glsl-parser 5 → 7
- @types/webxr 0.5.1 → 0.5.24

Webpack config fixes for breaking changes:
- style-loader v4: replace query string syntax with options object
- sass v1.98: add silenceDeprecations for @import warnings

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: sebavan

dist/spector.bundle.js

@@ -1,38 +1,48 @@
 /**
  * @license React
- * react-dom.production.min.js
+ * react-dom-client.production.js
  *
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
 /**
  * @license React
- * react-jsx-runtime.production.min.js
+ * react-dom.production.js
  *
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
 /**
  * @license React
- * react.production.min.js
+ * react-jsx-runtime.production.js
  *
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
 /**
  * @license React
- * scheduler.production.min.js
+ * react.production.js
  *
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * @license React
+ * scheduler.production.js
+ *
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.