fix: fix model name and add it to default gemini model

Author: johann-taberlet

src/shared/api.ts

@@ -241,9 +241,9 @@ export const openAiModelInfoSaneDefaults: ModelInfo = {
 // Gemini
 // https://ai.google.dev/gemini-api/docs/models/gemini
 export type GeminiModelId = keyof typeof geminiModels
-export const geminiDefaultModelId: GeminiModelId = "gemini-2.0-flash-thinking-exp-1219"
+export const geminiDefaultModelId: GeminiModelId = "gemini-2.0-flash-thinking-exp-01-21"
 export const geminiModels = {
-	"gemini-2.0-flash-thinking-exp-0121": {
+	"gemini-2.0-flash-thinking-exp-01-21": {
 		maxTokens: 65536,
 		contextWindow: 1_048_576,
 		supportsImages: true,