fix(amazonq): do not show workspace context settings (#5534)

As required by product, in the initial launch of workspace context, the settings is not displayed to users. We use AB test behind the scene to opt-in certain users.

Author: leigaol

plugins/amazonq/codewhisperer/jetbrains-community/src/software/aws/toolkits/jetbrains/services/codewhisperer/settings/CodeWhispererConfigurable.kt

@@ -151,7 +151,7 @@ class CodeWhispererConfigurable(private val project: Project) :
                     enabled(invoke)
                     bindSelected(codeWhispererSettings::isWorkspaceContextEnabled, codeWhispererSettings::toggleWorkspaceContextEnabled)
                 }.comment(message("aws.settings.codewhisperer.workspace_context.tooltip"))
-            }
+            }.visible(false)
             row {
                 checkBox(message("aws.settings.codewhisperer.project_context")).apply {
                     connect.subscribe(