Runner using streaming enabled causes error when using gemini with tools

Version v0.7.30

the relevant code pieces

```
agent := NewSupplierContractAgent(ctx, bearerToken)
runner := adk.NewRunner(ctx, adk.RunnerConfig{
Agent: agent,
EnableStreaming: true,
CheckPointStore: store.NewInMemoryStore(),
})

responseSchema := &einoSchema.Schema{}
ChatModel, err = gemini.NewChatModel(ctx, &gemini.Config{

ResponseJSONSchema: responseSchema,
Client: client,
Model: "gemini-3-flash-preview", // or gemini-1.5-pro, etc
ThinkingConfig: &genai.ThinkingConfig{
IncludeThoughts: false,
ThinkingBudget: nil,
},
})

iter := runner.Run(ctx, []adk.Message{
{

Role: schema.User,
Content: "what are my contracts ",
}},
adk.WithCheckPointID("1"),
adk.WithToolOptions([]tool.Option{authInput(bearerToken)}),
)

```
error:
name: SupplierContractFinder
path: [{SupplierContractFinder}][FATAL] 2026-02-18 10:28:45 index is nil

when enablestreaming is false the code functions properly and my agent calls the tools, but when turned on it returns an index is nil and agent action is nil in the event. Is there any solution to getting gemini tool calls to work properly when enable streaming is true on the runner?