Can't get complete content by Message:getText() in ChatMemory

[zero3h]

Bug description
Can't get complete content by Message:getText() in ChatMemory.

Environment
1.0.0-SNAPSHOT（1.0.0-20250512.234548-238）

Steps to reproduce
Call streaming API（OpenApiChatModel）.

Expected behavior
Store the answer content.

Minimal Complete Reproducible example

1. pom.xml

<dependency>
	<groupId>org.springframework.ai</groupId>
	<artifactId>spring-ai-starter-model-openai</artifactId>
</dependency>

2. code

chatClient.prompt()
.user(userInput).advisors(MessageChatMemoryAdvisor.builder(chatService).protectFromBlocking(true).build()).advisors(advisorSpec -> advisorSpec.param(ChatMemory.CONVERSATION_ID, conversationId))
				.stream().chatResponse();

The chatService is used for storing content.

Run, and I have identified an issue, the ChatMemory.add(String conversationId, List messages) parameter in Message:getText has no content.

[ThomasVitale]

Thanks for reporting this. It should be fixed by #3138