fix: align example tsconfigs with TypeScript 7

[chenjiahan]

Summary

The examples currently mix triple-slash references, implicit ambient types, and TypeScript options that are incompatible with the TypeScript 7 migration path. This aligns them with the current create-rsbuild conventions while keeping TypeScript 5.9 as the installed compiler.

• declare Rsbuild ambient types through ["@rsbuild/core/types", "node"] and Rspack ambient types through ["@rspack/core/module", "node"]
• remove redundant env reference files and Vue wildcard shims, and run Vue examples through vue-tsc
• add package-local type dependencies and scoped asset or remote module declarations, then fix the source type errors surfaced by stricter checks
• keep rspack/rspack-rsc/types/react-server-dom-rspack.d.ts unchanged pending confirmation from its maintainers