Amazon Bedrock Generators missing kwargs init params when serializing

[sjrl]

Describe the bug
The Amazon Bedrock Generators init method allows for kwargs

haystack-core-integrations/integrations/amazon_bedrock/src/haystack_integrations/components/generators/amazon_bedrock/generator.py

Lines 65 to 77 in 6aaf523

	def __init__(
	self,
	model: str,
	aws_access_key_id: Optional[Secret] = Secret.from_env_var("AWS_ACCESS_KEY_ID", strict=False), # noqa: B008
	aws_secret_access_key: Optional[Secret] = Secret.from_env_var( # noqa: B008
	"AWS_SECRET_ACCESS_KEY", strict=False
	),
	aws_session_token: Optional[Secret] = Secret.from_env_var("AWS_SESSION_TOKEN", strict=False), # noqa: B008
	aws_region_name: Optional[Secret] = Secret.from_env_var("AWS_DEFAULT_REGION", strict=False), # noqa: B008
	aws_profile_name: Optional[Secret] = Secret.from_env_var("AWS_PROFILE", strict=False), # noqa: B008
	max_length: Optional[int] = 100,
	**kwargs,
	):

but in the to_dict method ignores these kwargs

haystack-core-integrations/integrations/amazon_bedrock/src/haystack_integrations/components/generators/amazon_bedrock/generator.py

Lines 251 to 267 in 6aaf523

	def to_dict(self) -> Dict[str, Any]:
	"""
	Serializes the component to a dictionary.
	:returns:
	Dictionary with serialized data.
	"""
	return default_to_dict(
	self,
	aws_access_key_id=self.aws_access_key_id.to_dict() if self.aws_access_key_id else None,
	aws_secret_access_key=self.aws_secret_access_key.to_dict() if self.aws_secret_access_key else None,
	aws_session_token=self.aws_session_token.to_dict() if self.aws_session_token else None,
	aws_region_name=self.aws_region_name.to_dict() if self.aws_region_name else None,
	aws_profile_name=self.aws_profile_name.to_dict() if self.aws_profile_name else None,
	model=self.model,
	max_length=self.max_length,
	)

which means serializing and then deserializing will result in a different Generator with different behavior (e.g. if a user sets the temperature as a kwarg then this value will be "forgotten").

To Reproduce
Serialize a Bedrock generator using a kwarg and then deserialize.

Describe your environment (please complete the following information):

• OS: [e.g. iOS] MacOS
• Haystack version: 2.2
• Integration version: 0.8.0