Fixed rule_id being inserted into finding_id field

Author: andrecsilva

src/codemodder/result.py

@@ -113,7 +113,7 @@ def get_locations(self) -> Sequence[Sequence[Location]]:
 
 @dataclass(frozen=True, kw_only=True)
 class SASTResult(Result):
-    finding_id: str
+    finding_id: str | None
 
 
 @dataclass(frozen=True, kw_only=True)
@@ -126,7 +126,7 @@ def from_sarif(
         cls, sarif_result: ResultModel, sarif_run: Run, truncate_rule_id: bool = False
     ) -> Self:
         rule_id = cls.extract_rule_id(sarif_result, sarif_run, truncate_rule_id)
-        finding_id = cls.extract_finding_id(sarif_result) or rule_id
+        finding_id = cls.extract_finding_id(sarif_result)
         return cls(
             rule_id=rule_id,
             locations=cls.extract_locations(sarif_result, sarif_run),