fix: use validation_alias instead of alias for data_type fields in EntityInfo

ty v0.0.33 improved pydantic model analysis and now correctly infers
__init__ signatures. With alias=, the __init__ only accepts the alias
parameter name (e.g. dataType), even when populate_by_name=True is set.

Switching to validation_alias= keeps dataType accepted for JSON parsing
while exposing the Python field name data_type as the __init__ parameter,
which satisfies both ty's type checking and the existing tests.

Agent-Logs-Url: https://github.com/liudger/python-bsblan/sessions/42f382e1-fe63-4644-8d29-ae0689a1c1b0

Co-authored-by: liudger <4112111+liudger@users.noreply.github.com>

Author: Copilot

src/bsblan/models.py

@@ -326,13 +326,13 @@ class EntityInfo(BaseModel, Generic[T]):
     unit: str
     desc: str
     value: T | None = None
-    data_type: int = Field(alias="dataType", default=0)
+    data_type: int = Field(validation_alias="dataType", default=0)
     error: int = 0
     readonly: int = 0
     readwrite: int = 0
     precision: float | None = None
-    data_type_name: str = Field(default="", alias="dataType_name")
-    data_type_family: str = Field(default="", alias="dataType_family")
+    data_type_name: str = Field(default="", validation_alias="dataType_name")
+    data_type_family: str = Field(default="", validation_alias="dataType_family")
 
     @model_validator(mode="before")
     @classmethod