aurjson: Do not search by ID when argument is numeric
When performing info or multiinfo queries, one can currently either pass
package names or package IDs as parameters. As a consequence, it is
impossible to search for packages with a numeric package name because
numeric arguments are always treated as IDs. Since package IDs are not
public anymore these days, simply remove the possibility to search by ID
in revision 5 of the RPC interface.
Fixes FS#47324.
Suggested-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>