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749da6589a
## Summary
The isolation group for unused imports was relying on
`checker.semantic().current_statement()`, which isn't valid for that
rule, since it runs over the _scope_, not the statement. Instead, we
need to lookup the isolation group based on the `NodeId` of the
statement.
Our tests didn't catch this, because we mostly have cases that look like
this:
```python
if TYPE_CHECKING:
import shelve
import importlib
```
In this case, the two fixes to remove the two unused imports are
considered overlapping (since we delete the _full_ line, and the two
_full_ lines touch, and we consider exactly-adjacent fixes to be
overlapping), and so they don't run in a single pass due to the
non-overlapping-fixes requirement. That is: the isolation groups aren't
required for this case. They are, however, required for cases like:
```python
if TYPE_CHECKING:
import shelve
import importlib
```
...where the fixes don't overlap.
Closes https://github.com/astral-sh/ruff/issues/6758.
## Test Plan
`cargo test`
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|---|---|---|
| .. | ||
| flake8_to_ruff | ||
| ruff | ||
| ruff_benchmark | ||
| ruff_cache | ||
| ruff_cli | ||
| ruff_dev | ||
| ruff_diagnostics | ||
| ruff_formatter | ||
| ruff_index | ||
| ruff_macros | ||
| ruff_python_ast | ||
| ruff_python_codegen | ||
| ruff_python_formatter | ||
| ruff_python_index | ||
| ruff_python_literal | ||
| ruff_python_parser | ||
| ruff_python_resolver | ||
| ruff_python_semantic | ||
| ruff_python_stdlib | ||
| ruff_python_trivia | ||
| ruff_shrinking | ||
| ruff_source_file | ||
| ruff_text_size | ||
| ruff_wasm | ||