feat: add stable revision param to miniapp launch URL

[Gaubee]

Summary

• append stable miniapp launch revision query param __rv based on manifest version (e.g. __rv=v:1.0.0)
• keep existing context params intact and allow explicit __rv override
• add focused unit tests for revision context building

Why

• ensure iframe/wujie entry URL changes when miniapp version changes
• leverage browser cache normally between unchanged versions
• avoid timestamp-based cache busting that disables cache every launch

Validation

• pnpm vitest run src/services/miniapp-runtime/tests/launch-context.test.ts src/services/miniapp-runtime/tests/container.test.ts
• pnpm exec oxlint src/services/miniapp-runtime/index.ts src/services/miniapp-runtime/launch-context.ts src/services/miniapp-runtime/tests/launch-context.test.ts