ruff

fc2ebea7 - [red-knot] Make `infer.rs` unit tests independent of public symbol inference (#15690)

[red-knot] Make `infer.rs` unit tests independent of public symbol inference (#15690) ## Summary Make the remaining `infer.rs` unit tests independent from public symbol type inference decisions (see upcoming change in #15674). ## Test Plan - Made sure that the unit tests actually fail if one of the `assert_type` assertions is changed.