Apply suggestions from code review

Co-authored-by: Kevin Liu <kevinjqliu@users.noreply.github.com>

Author: kevinjqliu

pyiceberg/table/__init__.py

@@ -1827,9 +1827,6 @@ def __init__(
         self.options = options
         self.limit = limit
 
-    @abstractmethod
-    def projection(self) -> Schema: ...
-
     @abstractmethod
     def plan_files(self) -> Iterable[ScanTask]: ...
 
@@ -2109,7 +2106,7 @@ def _manifest_planner(self) -> ManifestGroupPlanner:
             options=self.options,
         )
 
-    @property
+    @cached_property
     def partition_filters(self) -> KeyDefaultDict[int, BooleanExpression]:
         return self._manifest_planner.partition_filters