[syntax-errors]: break outside loop F701 (#20556)

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## Summary

<!-- What's the purpose of the change? What does it do, and why? -->

This PR implements https://docs.astral.sh/ruff/rules/break-outside-loop/
(F701) as a semantic syntax error.

## Test Plan

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---------

Signed-off-by: 11happy <soni5happy@gmail.com>
Co-authored-by: Brent Westbrook <brentrwestbrook@gmail.com>

crates/ty_python_semantic/src/semantic_index/builder.rs

@@ -2785,6 +2785,10 @@ impl SemanticSyntaxContext for SemanticIndexBuilder<'_, '_> {
             self.semantic_syntax_errors.borrow_mut().push(error);
         }
     }
+
+    fn in_loop_context(&self) -> bool {
+        true
+    }
 }
 
 #[derive(Copy, Clone, Debug, PartialEq)]