`uucore` translations are once per-thread, which can lead to untranslated error names

Bug report form

• I have done a basic search of the issue tracker to find any existing issues that are similar.
• I have checked that my version is at least the latest stable release available via my installation method.

Describe the bug

disclaimer: based on my very shallow understanding of uutils. hopefully it's correct.

• uucore has a translate! macro which uses localized names for error message ids
• to use this, you first call an initializer with the name of the util. this initialization is thread local
• so this system assumes one uucore util per thread
• ...which nushell doesn't do
• this means if it was already loaded for one util, an error for a different util in the same nu thread might give an untranslated error name

How to reproduce

both of these must start from a fresh session of nu

> mktemp foo
Error: nu::shell::error

  × too few X's in template 'foo'
   ╭────
 1 │ crates/nu-command/src/filesystem/mktemp.rs:119:48
   · ────────────────────────┬────────────────────────
   ·                         ╰── too few X's in template 'foo'
   ╰────

vs.

> uname | ignore
> mktemp foo
Error: nu::shell::error

  × mktemp-error-too-few-xs
   ╭────
 1 │ crates/nu-command/src/filesystem/mktemp.rs:119:48
   · ────────────────────────┬────────────────────────
   ·                         ╰── mktemp-error-too-few-xs
   ╰────

Expected behavior

calling uname before mktemp should not affect mktemp's translations

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