fix(toolsets): use typing.Any instead of builtin any in get_distribution return type

`Optional[Dict[str, any]]` annotated the value type with the builtin `any()`
function rather than `typing.Any`; static checkers reject it and the intent is
`Any`. Add `Any` to the typing import and fix the annotation (#2139).

Re-authored to the PR author's GitHub noreply identity: the original commit
carried an empty author email (misconfigured local git, not malice).
Salvaged from PR #20812.

toolset_distributions.py

@@ -6,7 +6,7 @@ A distribution maps toolset names to the % chance each is enabled for a prompt
 be a "+"-grouped compound ("browser+search") that rolls once for all members.
 """
 
-from typing import Dict, List, Optional
+from typing import Any, Dict, List, Optional
 import random
 from toolsets import validate_toolset
 
@@ -46,7 +46,7 @@ DISTRIBUTIONS = {
 }
 
 
-def get_distribution(name: str) -> Optional[Dict[str, any]]:
+def get_distribution(name: str) -> Optional[Dict[str, Any]]:
     """Distribution definition (description + toolsets), or None if unknown."""
     return DISTRIBUTIONS.get(name)