feature(amazonq): update @workspace command string and remove Beta (aws#5128)

* update @workspace command string and remove Beta

* patch

* changelog

Author: Will-ShaoHua

.changes/next-release/feature-b05e3cd8-abd5-47f9-bd5c-02c7b7eb378e.json

@@ -0,0 +1,4 @@
+{
+  "type" : "feature",
+  "description" : "Introduce @workspace command to enhance chat context fetching for Chat"
+}

plugins/amazonq/mynah-ui/src/mynah-ui/ui/commands.ts

@@ -57,7 +57,7 @@ export const workspaceCommand: QuickActionCommandGroup = {
     commands: [
         {
             command: '@workspace',
-            description: '(BETA) Reference all code in workspace.',
+            description: 'Reference all code in workspace.',
         },
     ],
-}
+}

plugins/core/resources/resources/software/aws/toolkits/resources/MessagesBundle.properties

@@ -234,7 +234,7 @@ aws.settings.codewhisperer.group.q_chat=Chat
 aws.settings.codewhisperer.include_code_with_reference=Include suggestions with code references
 aws.settings.codewhisperer.include_code_with_reference.tooltip=When checked, Amazon Q will include suggestions with code references. If you authenticate through IAM Identity Center, this setting is controlled by your Amazon Q Developer Pro administrator. <a href="https://docs.aws.amazon.com/amazonq/latest/qdeveloper-ug/code-reference.html">Learn more<a/>
 aws.settings.codewhisperer.project_context=Workspace index
-aws.settings.codewhisperer.project_context.tooltip=This feature is in BETA. When you add @workspace to your questions in Amazon Q chat, Amazon Q will index your open workspace files locally to use as context for its response. Extra CPU usage is expected while indexing a workspace. This will not impact Amazon Q features or your IDE, but you may manage CPU usage by setting the number of local threads below.
+aws.settings.codewhisperer.project_context.tooltip=When you add @workspace to your questions in Amazon Q chat, Amazon Q will index your open workspace files locally to use as context for its response. Extra CPU usage is expected while indexing a workspace. This will not impact Amazon Q features or your IDE, but you may manage CPU usage by setting the number of local threads below.
 aws.settings.codewhisperer.project_context_gpu=Workspace index uses GPU
 aws.settings.codewhisperer.project_context_gpu.tooltip=Enable GPU to help index your local workspace files. This setting only applies to Linux and Windows.
 aws.settings.codewhisperer.project_context_index_max_size=Workspace index max size