fix(robot-server): Fix analysis log message (#17253)

robot-server logs a message when it begins a protocol analysis.
Historically, this happened when, and only when, a client hit the `POST
/protocols` endpoint, so the log was placed there. In modern times, it's
gotten a little more complicated, and the log has not caught up with
that: I think we are logging analyses that do not actually exist. This
fixes that.

Author: SyntaxColoring

robot-server/robot_server/protocols/router.py

@@ -449,7 +449,7 @@ async def _get_cached_protocol_analysis() -> PydanticResponse[
         files=[ProtocolFile(name=f.path.name, role=f.role) for f in source.files],
     )
 
-    log.info(f'Created protocol "{protocol_id}" and started analysis "{analysis_id}".')
+    log.info(f'Created protocol "{protocol_id}".')
 
     return await PydanticResponse.create(
         content=SimpleBody.model_construct(data=data),
@@ -504,6 +504,9 @@ async def _start_new_analysis_if_necessary(
                 new_parameters=analyzer.get_verified_run_time_parameters(),
             )
         ):
+            log.info(
+                f'Starting new analysis "{analysis_id}" for protocol "{protocol_id}".'
+            )
             started_new_analysis = True
             analyses.append(
                 await analyses_manager.start_analysis(