Function handle_call_expr 

fn handle_call_expr(
    gcx: Gcx<'_>,
    context: ConstructorContext,
    parent_expr: &Expr<'_>,
    call_expr: &Expr<'_>,
    call_args: &CallArgs<'_>,
    call_options: &Option<&CallOptions<'_>>,
) -> Option<BytecodeDependency>

Helper function to analyze and extract bytecode dependency from a given call expression.