models.reference_files:IgnoreAction._validate_mode - fix missing pare…

…ntheses around "or" logic

acacore/models/reference_files.py

@@ -190,7 +190,7 @@ class IgnoreAction(NoDefaultsModel):
 
     @model_validator(mode="after")
     def _validate_model(self) -> Self:
-        if self.template == "text" and self.reason is None or not self.reason.strip():
+        if self.template == "text" and (self.reason is None or not self.reason.strip()):
             raise ValueError("Reason cannot be empty when template is set to text.")
         self.reason = (self.reason.strip() or None) if self.reason else None
         return self