Enable Oz OIDC on stable (#10468)

## Description

Enables Oz OIDC federation on stable. This was already enabled on
preview, which set it up for Warp-hosted agents but not self-hosted
ones.

## Testing

N/A - flag flip

## Agent Mode
- [x] Warp Agent Mode - This PR was created via Warp's AI Agent Mode

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Author: bnavetta

app/Cargo.toml

@@ -574,6 +574,7 @@ default = [
     "cloud_mode_image_context",
     "agent_mode_computer_use",
     "oz_platform_skills",
+    "oz_identity_federation",
     "sync_ambient_plans",
     "conversation_artifacts",
     "agent_view",

crates/warp_features/src/lib.rs

@@ -927,7 +927,6 @@ pub const DOGFOOD_FLAGS: &[FeatureFlag] = &[
     // End manually enabled Code features.
     FeatureFlag::EditableMarkdownMermaid,
     FeatureFlag::CodeReviewScrollPreservation,
-    FeatureFlag::OzIdentityFederation,
     FeatureFlag::AgentHarness,
     FeatureFlag::OzHandoff,
     FeatureFlag::ConversationApi,
@@ -954,7 +953,6 @@ pub const PREVIEW_FLAGS: &[FeatureFlag] = &[
     FeatureFlag::Orchestration,
     FeatureFlag::BlocklistMarkdownTableRendering,
     FeatureFlag::MarkdownTables,
-    FeatureFlag::OzIdentityFederation,
     FeatureFlag::GitOperationsInCodeReview,
 ];
 
@@ -1048,7 +1046,6 @@ impl FeatureFlag {
                 Some("Enables rendering markdown tables inline in AI block list responses.")
             }
             MarkdownTables => Some("Enables rendering and interaction support for markdown tables in notebooks."),
-            OzIdentityFederation => Some("Enables automatic authentication from Oz to AWS and GCP"),
             SettingsFile => Some("Enables configuring Warp via a user-editable `settings.toml` file, with hot reload and error reporting for invalid values."),
             GitOperationsInCodeReview => Some("Enables commit, push, and create-PR actions directly from the code review panel."),
             _ => None,