Bump TypeScript to 5.3 with verbatimModuleSyntax

This commit upgrades TypeScript to the latest version 5.3 and introduces
`verbatimModuleSyntax` in line with the official Vue guide
recommendatinos (vuejs/docs#2592).

By enforcing `import type` for type-only imports, this commit improves
code clarity and supports tooling optimization, ensuring imports are
only bundled when necessary for runtime.

Changes:

- Bump TypeScript to 5.3.3 across the project.
- Adjust import statements to utilize `import type` where applicable,
  promoting cleaner and more efficient code.

src/infrastructure/WindowVariables/WindowVariablesValidator.ts

@@ -1,10 +1,10 @@
 import { ContextIsolatedElectronDetector } from '@/infrastructure/RuntimeEnvironment/Electron/ContextIsolatedElectronDetector';
-import { ElectronEnvironmentDetector } from '@/infrastructure/RuntimeEnvironment/Electron/ElectronEnvironmentDetector';
+import type { ElectronEnvironmentDetector } from '@/infrastructure/RuntimeEnvironment/Electron/ElectronEnvironmentDetector';
 import { OperatingSystem } from '@/domain/OperatingSystem';
 import {
-  PropertyKeys, isBoolean, isFunction, isNumber, isPlainObject,
+  type PropertyKeys, isBoolean, isFunction, isNumber, isPlainObject,
 } from '@/TypeHelpers';
-import { WindowVariables } from './WindowVariables';
+import type { WindowVariables } from './WindowVariables';
 
 /**
  * Checks for consistency in runtime environment properties injected by Electron preloader.