Generalize siblings dict generation (breaking)

Breaking compatibility with old models to make alternative sibilings
dict generation more self-adjustable to new decision tags.

ml/synthesis/src/components/data_crawling/node/node_converting.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from collections import defaultdict
 from typing import Iterable
 
 from components.common.nitta_node import NittaNode
@@ -44,26 +45,11 @@ def _extract_params_dict(node: NittaNode) -> dict:
 
 
 def _extract_alternative_siblings_dict(node: NittaNode, siblings: Iterable[NittaNode]) -> dict:
-    # this could be refactored to simply get a count per decision tag,
-    # but backwards compatibility with old models will be broken
-    result = {
-        "alt_bindings": 0,
-        "alt_group_bindings": 0,
-        "alt_dataflows": 0,
-        "alt_refactorings": 0,
-    }
+    result: defaultdict[str, int] = defaultdict(lambda: 0)
 
     for sibling in siblings:
         if sibling.sid == node.sid:
             continue
-        if sibling.decision_tag == _SINGLE_BIND_DECISION_TAG:
-            result["alt_bindings"] += 1
-        elif sibling.decision_tag == _GROUP_BIND_DECISION_TAG:
-            result["alt_group_bindings"] += 1
-        elif sibling.decision_tag in _DATAFLOW_DECISION_TAGS:
-            result["alt_dataflows"] += 1
-        else:
-            # refactorings have arbitrary decision tags
-            result["alt_refactorings"] += 1
+        result[f"siblings_{sibling.decision_tag}"] += 1
 
-    return result
+    return dict(result)