Auto merge of #13444 - kpreid:fix-8524-private-rep, r=blyxyas
`module_name_repetitions`: don't warn if the item is in a private module.
Fixes <https://github.com/rust-lang/rust-clippy/issues/8524>.
There is still a warning (as there should be) if the item is reexported by name, but not by glob; that would require further work to examine the names in the glob, and I haven't looked into that.
Credit to `@Centri3` for suggesting approximately this simple fix in <https://github.com/rust-lang/rust-clippy/issues/8524#issuecomment-1729036149>. However, per later comment <https://github.com/rust-lang/rust-clippy/issues/8524#issuecomment-2035836495>, I am not making it configuration-dependent, but *always* checking public items in public modules only.
changelog: [`module_name_repetitions`]: don't warn if the item is in a private module.
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