feat: Update ExtraLoginOptions

Signed-off-by: Gaurav Goel <[email protected]>

Author: grvgoel81

core/src/main/java/com/web3auth/core/types/ExtraLoginOptions.kt

@@ -13,7 +13,7 @@ data class ExtraLoginOptions(
     @Keep private var userIdField: String? = null,
     @Keep private var isUserIdCaseSensitive: Boolean? = null,
     @Keep private var access_token: String? = null,
-    @Keep private var flow_type: EmailFlowType = EmailFlowType.link,
+    @Keep private var flow_type: EmailFlowType = EmailFlowType.code,
     @Keep private var display: Display? = null,
     @Keep private var prompt: Prompt? = null,
     @Keep private var max_age: String? = null,