Renames support message creation method for clarity

Improves code readability by updating the support message
creation function name to better reflect its purpose and
behavior when checking if the message is the first in
the conversation.

Author: matusdrobuliak66

services/web/server/src/simcore_service_webserver/conversations/_controller/_conversations_messages_rest.py

@@ -91,7 +91,7 @@ async def create_conversation_message(request: web.Request):
         raise_unsupported_type(conversation.type)
 
     message, is_first_message = (
-        await _conversation_message_service.create_support_message_and_check_if_it_is_first_message(
+        await _conversation_message_service.create_support_message_with_first_check(
             app=request.app,
             user_id=req_ctx.user_id,
             project_id=None,  # Support conversations don't use project_id

services/web/server/src/simcore_service_webserver/conversations/_conversation_message_service.py

@@ -64,7 +64,7 @@ async def create_message(
     return created_message
 
 
-async def create_support_message_and_check_if_it_is_first_message(
+async def create_support_message_with_first_check(
     app: web.Application,
     *,
     user_id: UserID,