fix(workers): make RunQueryParametersNeedleValue a BaseModel with arbitrary_types_allowed

The bare class caused PydanticSchemaGenerationError at import time,
cascading across all workers sub-resource tests (1100+ failures).

Author: musa-cf

src/cloudflare/types/workers/observability/telemetry_query_response.py

@@ -197,8 +197,8 @@ class RunQueryParametersHaving(BaseModel):
     value: float
 
 
-class RunQueryParametersNeedleValue:
-    pass
+class RunQueryParametersNeedleValue(BaseModel):
+    model_config = {"arbitrary_types_allowed": True}
 
 
 class RunQueryParametersNeedle(BaseModel):