chore(telemetry): updated opt-in attributes to internal

Author: poshinchen

src/strands/telemetry/tracer.py

@@ -94,7 +94,8 @@ def __init__(self) -> None:
 
         # Read OTEL_SEMCONV_STABILITY_OPT_IN environment variable
         opt_in_values = self._parse_semconv_opt_in()
-        self._use_latest_genai_conventions = "gen_ai_latest_experimental" in opt_in_values
+        ## To-do: should not set below attributes directly, use env var instead
+        self.use_latest_genai_conventions = "gen_ai_latest_experimental" in opt_in_values
         self._include_tool_definitions = "gen_ai_tool_definitions" in opt_in_values
 
     def _parse_semconv_opt_in(self) -> set[str]:
@@ -330,7 +331,7 @@ def end_model_invoke_span(
         # Add optional attributes if they have values
         self._add_optional_usage_and_metrics_attributes(attributes, usage, metrics)
 
-        if self._use_latest_genai_conventions:
+        if self.use_latest_genai_conventions:
             self._add_event(
                 span,
                 "gen_ai.client.inference.operation.details",
@@ -380,7 +381,7 @@ def start_tool_call_span(self, tool: ToolUse, parent_span: Optional[Span] = None
         span_name = f"execute_tool {tool['name']}"
         span = self._start_span(span_name, parent_span, attributes=attributes, span_kind=trace_api.SpanKind.INTERNAL)
 
-        if self._use_latest_genai_conventions:
+        if self.use_latest_genai_conventions:
             self._add_event(
                 span,
                 "gen_ai.client.inference.operation.details",
@@ -436,7 +437,7 @@ def end_tool_call_span(
                 }
             )
 
-            if self._use_latest_genai_conventions:
+            if self.use_latest_genai_conventions:
                 self._add_event(
                     span,
                     "gen_ai.client.inference.operation.details",
@@ -527,7 +528,7 @@ def end_event_loop_cycle_span(
         if tool_result_message:
             event_attributes["tool.result"] = serialize(tool_result_message["content"])
 
-            if self._use_latest_genai_conventions:
+            if self.use_latest_genai_conventions:
                 self._add_event(
                     span,
                     "gen_ai.client.inference.operation.details",
@@ -621,7 +622,7 @@ def end_agent_span(
         attributes: Dict[str, AttributeValue] = {}
 
         if response:
-            if self._use_latest_genai_conventions:
+            if self.use_latest_genai_conventions:
                 self._add_event(
                     span,
                     "gen_ai.client.inference.operation.details",
@@ -688,7 +689,7 @@ def start_multiagent_span(
 
         span = self._start_span(operation, attributes=attributes, span_kind=trace_api.SpanKind.CLIENT)
 
-        if self._use_latest_genai_conventions:
+        if self.use_latest_genai_conventions:
             parts: list[dict[str, Any]] = []
             if isinstance(task, list):
                 parts = self._map_content_blocks_to_otel_parts(task)
@@ -715,7 +716,7 @@ def end_swarm_span(
     ) -> None:
         """End a swarm span with results."""
         if result:
-            if self._use_latest_genai_conventions:
+            if self.use_latest_genai_conventions:
                 self._add_event(
                     span,
                     "gen_ai.client.inference.operation.details",
@@ -750,7 +751,7 @@ def _get_common_attributes(
             A dictionary of attributes following the appropriate GenAI conventions.
         """
         common_attributes = {"gen_ai.operation.name": operation_name}
-        if self._use_latest_genai_conventions:
+        if self.use_latest_genai_conventions:
             common_attributes.update(
                 {
                     "gen_ai.provider.name": "strands-agents",
@@ -771,7 +772,7 @@ def _add_event_messages(self, span: Span, messages: Messages) -> None:
             span: The span to which events will be added.
             messages: List of messages being sent to the agent.
         """
-        if self._use_latest_genai_conventions:
+        if self.use_latest_genai_conventions:
             input_messages: list = []
             for message in messages:
                 input_messages.append(