feat(amazonq): support listAvailableModels request (aws#7591)

## Problem

Clients should support listAvailableModels lsp method


## Solution

Add listAvailableModels to request handlers


---

- Treat all work as PUBLIC. Private `feature/x` branches will not be
squash-merged at release time.
- Your code changes must meet the guidelines in
[CONTRIBUTING.md](https://github.com/aws/aws-toolkit-vscode/blob/master/CONTRIBUTING.md#guidelines).
- License: I confirm that my contribution is made under the terms of the
Apache 2.0 license.

Author: ctlai95

package-lock.json

@@ -61,6 +61,7 @@ import {
     ruleClickRequestType,
     pinnedContextNotificationType,
     activeEditorChangedNotificationType,
+    listAvailableModelsRequestType,
     ShowOpenDialogRequestType,
     ShowOpenDialogParams,
     openFileDialogRequestType,
@@ -369,6 +370,7 @@ export function registerMessageListeners(
             case listMcpServersRequestType.method:
             case mcpServerClickRequestType.method:
             case tabBarActionRequestType.method:
+            case listAvailableModelsRequestType.method:
                 await resolveChatResponse(message.command, message.params, languageClient, webview)
                 break
             case followUpClickNotificationType.method:

packages/amazonq/src/lsp/chat/messages.ts

@@ -471,8 +471,8 @@
         "@aws-sdk/types": "^3.13.1",
         "@aws/chat-client": "^0.1.4",
         "@aws/chat-client-ui-types": "^0.1.47",
-        "@aws/language-server-runtimes": "^0.2.101",
-        "@aws/language-server-runtimes-types": "^0.1.42",
+        "@aws/language-server-runtimes": "^0.2.102",
+        "@aws/language-server-runtimes-types": "^0.1.43",
         "@cspotcode/source-map-support": "^0.8.1",
         "@sinonjs/fake-timers": "^10.0.2",
         "@types/adm-zip": "^0.4.34",