feat: remove ai_duo_agent_platform_ga_rollout feature flag

Closes #2233

See merge request !3112

Merged-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Approved-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Co-authored-by: Andrei Zubov <azubov@gitlab.com>

chore: updated display name

See merge request !3114

Merged-by: Juhee Lee <julee@gitlab.com>
Approved-by: Juhee Lee <julee@gitlab.com>
Co-authored-by: Donald Cook <dcook@gitlab.com>

# **release**  [6.71.0](v6.70.2...v6.71.0) (2026-02-19)
### ✨ Features

* remove ai_duo_agent_platform_ga_rollout feature flag ([fc28909d](fc28909d)) by Andrei Zubov

### 🔁 Chore

* updated display name ([23e2861c](23e2861c)) by Donald Cook

### Language Server Release [8.66.0...8.67.0](gitlab-org/editor-extensions/gitlab-lsp@v8.66.0...v8.67.0)
### [8.67.0](gitlab-org/editor-extensions/gitlab-lsp@v8.66.0...v8.67.0) (2026-02-18)

#### ✨ Features

* remove agentic platform ga rollout check ([35bdefd](gitlab-org/editor-extensions/gitlab-lsp@35bdefd9)) by Andrei Zubov

#### 🐛 Bug Fixes

* Check Duo Feature Access state only when API is valid ([aee1068](gitlab-org/editor-extensions/gitlab-lsp@aee1068b)) by Olena Horal-Koretska

#### ⚡ Refactor

* **cli:** duo direct to run anthropic backend ([6ce728a](gitlab-org/editor-extensions/gitlab-lsp@6ce728aa)) by Tomas Vik
* **cli:** shared CLI options definition ([8d137d4](gitlab-org/editor-extensions/gitlab-lsp@8d137d4b)) by Tomas Vik

#### ✅ Tests

* **cli:** disable glab e2e test for now ([8f2b743](gitlab-org/editor-extensions/gitlab-lsp@8f2b7434)) by Tomas Vik
* increase timeout in integration-persistent-storage test to reduce flakiness ([3d6cc58](gitlab-org/editor-extensions/gitlab-lsp@3d6cc584)) by Tomas Vik

#### 🔁 Chore

* **cli:** update required glab version ([8232728](gitlab-org/editor-extensions/gitlab-lsp@8232728c)) by Tomas Vik