Function t_fmt2 

pub fn t_fmt2<T1: Display, T2: Display>(
    app: &AppState,
    key: &str,
    arg1: T1,
    arg2: T2,
) -> String

What: Format translated string with two format arguments.

Inputs:

• app: Application state (for locale access)
• key: Translation key
• arg1: First format argument
• arg2: Second format argument

Output:

• Formatted translated string