Revert "fix(plugins): enable bundled Brave web search plugin by default (#52072)"

This reverts commit 0ea3c4d.

Author: vincentkoc

src/plugins/config-state.test.ts

@@ -271,11 +271,6 @@ describe("resolveEnableState", () => {
     expect(state).toEqual({ enabled: true });
   });
 
-  it("enables bundled web search providers like brave by default", () => {
-    const state = resolveEnableState("brave", "bundled", normalizePluginsConfig({}));
-    expect(state).toEqual({ enabled: true });
-  });
-
   it("allows bundled plugins to opt into default enablement from manifest metadata", () => {
     const state = resolveEnableState("profile-aware", "bundled", normalizePluginsConfig({}), true);
     expect(state).toEqual({ enabled: true });

src/plugins/config-state.ts

@@ -31,7 +31,6 @@ export type NormalizedPluginsConfig = {
 export const BUNDLED_ENABLED_BY_DEFAULT = new Set<string>([
   "amazon-bedrock",
   "anthropic",
-  "brave",
   "byteplus",
   "cloudflare-ai-gateway",
   "deepseek",