enable `reportUnknownParameterType` in basedpyright

[nathanjmcdougall]

Doesn't need to be enabled for the tests dir - can stay disabled.

[[tool.basedpyright.executionEnvironments]]
root = "tests"
reportUnknownParameterType = false
reportUnreachable = false
reportUnusedFunction = false

Many violation cases seem to be that KeyValueFileManager is a generic but we're not marking it with KeyValueFileManager[object] explicitly - doing so fixes the issue.

There's also some cases in pipeweld where we're not using annotations when we should be.

Some cases are due to Key: TypeAlias = str | re.Pattern in src\usethis\_io.py. The re.Pattern is generic in the string type - we should go with Key: TypeAlias = str | re.Pattern[AnyStr].