fix(amazonq): cherry-pick changes to support aws/chat/chatOptionsUpdate from model selection pr (#5779)

lots of warnings because not currently handled
```
WARN - org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint - Unsupported notification method: aws/chat/chatOptionsUpdate
```

Author: rli

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/AmazonQLanguageClient.kt

@@ -8,6 +8,7 @@ import org.eclipse.lsp4j.jsonrpc.services.JsonRequest
 import org.eclipse.lsp4j.services.LanguageClient
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.LSPAny
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.chat.CHAT_OPEN_TAB
+import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.chat.CHAT_OPTIONS_UPDATE_NOTIFICATION
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.chat.CHAT_SEND_CONTEXT_COMMANDS
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.chat.CHAT_SEND_UPDATE
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.chat.CopyFileParams
@@ -67,4 +68,7 @@ interface AmazonQLanguageClient : LanguageClient {
 
     @JsonNotification(DID_CREATE_DIRECTORY)
     fun createDirectory(params: FileParams)
+
+    @JsonNotification(CHAT_OPTIONS_UPDATE_NOTIFICATION)
+    fun sendChatOptionsUpdate(params: LSPAny)
 }

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/AmazonQLanguageClientImpl.kt

@@ -41,6 +41,7 @@ import software.aws.toolkits.jetbrains.services.amazonq.lsp.flareChat.ChatCommun
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.flareChat.FlareUiMessage
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.LSPAny
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.chat.CHAT_OPEN_TAB
+import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.chat.CHAT_OPTIONS_UPDATE_NOTIFICATION
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.chat.CHAT_SEND_CONTEXT_COMMANDS
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.chat.CHAT_SEND_UPDATE
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.chat.CopyFileParams
@@ -413,6 +414,16 @@ class AmazonQLanguageClientImpl(private val project: Project) : AmazonQLanguageC
         return refreshVfs(params.newPath)
     }
 
+    override fun sendChatOptionsUpdate(params: LSPAny) {
+        val chatManager = ChatCommunicationManager.getInstance(project)
+        chatManager.notifyUi(
+            FlareUiMessage(
+                command = CHAT_OPTIONS_UPDATE_NOTIFICATION,
+                params = params,
+            )
+        )
+    }
+
     private fun refreshVfs(path: String) {
         val currPath = Paths.get(path)
         if (currPath.startsWith(localHistoryPath)) return

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/model/aws/chat/FlareChatCommands.kt

@@ -20,6 +20,7 @@ const val CHAT_INSERT_TO_CURSOR_NOTIFICATION = "aws/chat/insertToCursorPosition"
 const val CHAT_LINK_CLICK = "aws/chat/linkClick"
 const val CHAT_LIST_CONVERSATIONS = "aws/chat/listConversations"
 const val CHAT_OPEN_TAB = "aws/chat/openTab"
+const val CHAT_OPTIONS_UPDATE_NOTIFICATION = "aws/chat/chatOptionsUpdate"
 const val CHAT_PROMPT_OPTION_ACKNOWLEDGED = "chatPromptOptionAcknowledged"
 const val CHAT_QUICK_ACTION = "aws/chat/sendChatQuickAction"
 const val CHAT_READY = "aws/chat/ready"