ux: scroll al inicio al navegar entre rutas

[David1984TK]

Descripción

Categoría: UI/UX (arreglo menor)

Al navegar a una ruta nueva (lista → detalle de proyecto, links del navbar) la página abría a la altura de scroll de la vista anterior — si estabas al fondo de la lista de proyectos, el detalle abría a mitad del contenido.

Cambios

• bimex-frontend/src/App.jsx: componente ScrollToTop que resetea a (0,0) en navegaciones PUSH/REPLACE. En atrás/adelante (POP) no interviene: se respeta la restauración de scroll nativa del navegador.

Verificación

• npm run test:run pasa sin errores (frontend: 124/124)
• npm run build sin errores de compilación
• npm run lint sin errores (warnings preexistentes)
• cargo test (no aplica)

Notas para el revisor

~12 líneas, sin dependencias nuevas. useNavigationType viene de react-router-dom (ya en v7).

[Praizfotos]

@Praizfotos has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello Maintainer. I would love to work on this issue. Please assign to me. Thank you.

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