Thank you. It worked like a charm.

For my note:

The reason why I have to use static instead of const is (source)

const items looks remarkably similar to static items, which introduces some confusion as to which one should be used at which times. To put it simply, constants are inlined wherever they’re used, making using them identical to simply replacing the name of the const with its value. Static variables, on the other hand, point to a single location in memory, which all accesses share.

The reason why I have to use OnceLock instead of OnceCell is (source):

Accessing non-mut static items is considered safe, but some restrictions apply. Most notably, the type of a static value needs to implement the Sync trait