feat(amazonq): setup to test flare main changes (#7998)

To setup:
https://github.com/aws/aws-toolkit-vscode/releases/tag/pre-prerelease-flare
This points `aws-toolkit-vscode` master branch to `langauage servers`
main branch to test the latest changes in both repositories



---

- 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: laileni-aws

packages/amazonq/src/lsp/config.ts

@@ -35,7 +35,7 @@ export function isValidConfigSection(section: unknown): section is ConfigSection
 }
 
 export const defaultAmazonQLspConfig: ExtendedAmazonQLSPConfig = {
-    manifestUrl: 'https://aws-toolkit-language-servers.amazonaws.com/qAgenticChatServer/0/manifest.json',
+    manifestUrl: 'https://github.com/aws/language-servers/releases/download/agentic-alpha/manifest.json', // This manifest.json will be pointing to main branch of language servers repo(https://github.com/aws/language-servers/releases/tag/agentic-alpha)
     supportedVersions: '1.*.*',
     id: 'AmazonQ', // used across IDEs for identifying global storage/local disk locations. Do not change.
     suppressPromptPrefix: 'amazonQ',