SendMessageStream causes panic when iterator callback returns `false`

[vito]

The iterator returned by SendMessageStream doesn't respect a false return value from the callback function, leading to a panic if the callback breaks the loop.

go-genai/chats.go

Line 151 in ebca052

yield(chunk, nil)

Environment details

• Programming language: Go
• OS: Linux
• Language runtime version: 1.24.3
• Package version: v1.4.0

Steps to reproduce

for res, err := range chat.SendMessageStream(ctx, parts...) {
  break
}

panic: runtime error: range function continued iteration after function for loop body returned false

goroutine 2932889 [running]:
github.com/dagger/dagger/core.(*GenaiClient).SendQuery.(*GenaiClient).processStreamResponse-range1(0xc06dbc7808?, {0x37a0160?, 0xc0add48850?})
	/app/core/llm_google.go:138 +0xa71
google.golang.org/genai.(*Chat).SendMessageStream.func1-range1(0x0, {0x37a0160?, 0xc0add48850?})
	/go/pkg/mod/google.golang.org/genai@v1.4.0/chats.go:135 +0x1ab