fix: fail closed missing provider group policy across message channels (#23367) (thanks @bmendonca3)

extensions/line/src/channel.ts

@@ -3,6 +3,7 @@ import {
   DEFAULT_ACCOUNT_ID,
   LineConfigSchema,
   processLineMessage,
+  resolveRuntimeGroupPolicy,
   type ChannelPlugin,
   type ChannelStatusIssue,
   type OpenClawConfig,
@@ -163,7 +164,13 @@ export const linePlugin: ChannelPlugin<ResolvedLineAccount> = {
     collectWarnings: ({ account, cfg }) => {
       const defaultGroupPolicy = (cfg.channels?.defaults as { groupPolicy?: string } | undefined)
         ?.groupPolicy;
-      const groupPolicy = account.config.groupPolicy ?? defaultGroupPolicy ?? "allowlist";
+      const { groupPolicy } = resolveRuntimeGroupPolicy({
+        providerConfigPresent: cfg.channels?.line !== undefined,
+        groupPolicy: account.config.groupPolicy,
+        defaultGroupPolicy,
+        configuredFallbackPolicy: "allowlist",
+        missingProviderFallbackPolicy: "allowlist",
+      });
       if (groupPolicy !== "open") {
         return [];
       }