137-fix-bug-with-plotly-inside-router

[vituri]

Fixes #137

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Description

• Fixed an issue where plots and cards were not fillable when using shiny.router with bslib::page_fillable. A fill argument was added to router_ui to control whether fill classes are added.
• Fixed errors in tests by ensuring js_file and css_file are defined within the router_ui function scope.

[yoelii]

Hello,

When the pull request will be approuved and available ?

thanks