perf(functions): Use exponential instead of constant backoff for FunctionCall:wait (#2312)

Author: erlendvollset

cognite/client/data_classes/functions.py

@@ -17,6 +17,7 @@
     WriteableCogniteResourceList,
 )
 from cognite.client.data_classes.shared import TimestampRange
+from cognite.client.utils._retry import Backoff
 from cognite.client.utils._time import ms_to_datetime
 
 if TYPE_CHECKING:
@@ -685,9 +686,10 @@ def _get_identifiers_or_raise(call_id: int | None, function_id: int | None) -> t
         return call_id, function_id
 
     def wait(self) -> None:
+        backoff = Backoff(max_wait=5, base=1)
         while self.status == "Running":
             self.update()
-            time.sleep(1.0)
+            time.sleep(next(backoff))
 
 
 class FunctionCallList(CogniteResourceList[FunctionCall], InternalIdTransformerMixin):