Record per-language bundle fallbacks on the download source

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

lib/entry-points.js

@@ -152647,6 +152647,9 @@ var downloadCodeQL = async function(source, apiDetails, tarVersion, tempDir, log
     statusReport: bundle.kind === "per-language" ? {
       ...statusReport,
       perLanguage: { tools_bundle_language: bundle.language }
+    } : source.perLanguageBundleFallback ? {
+      ...statusReport,
+      perLanguage: { tools_per_language_bundle_fallback: true }
     } : statusReport
   };
 };
@@ -152784,7 +152787,8 @@ async function downloadCodeQLBundle(action, source, apiDetails, tarVersion, temp
     const result = await downloadCodeQL(
       {
         ...source,
-        bundle: { kind: "combined", url: bundle.combinedBundleURL }
+        bundle: { kind: "combined", url: bundle.combinedBundleURL },
+        perLanguageBundleFallback: true
       },
       apiDetails,
       tarVersion,
@@ -152795,8 +152799,7 @@ async function downloadCodeQLBundle(action, source, apiDetails, tarVersion, temp
       ...result,
       statusReport: {
         ...result.statusReport,
-        totalDurationMs: durationMsSince(startTime),
-        perLanguage: { tools_per_language_bundle_fallback: true }
+        totalDurationMs: durationMsSince(startTime)
       }
     };
   }

src/codeql-bundle.ts

@@ -27,6 +27,8 @@ export interface CodeQLDownloadSource {
   cliVersion?: string;
   /** Resolved version for telemetry, independent of whether the bundle can be cached. */
   toolsVersion: string;
+  /** The release lacks the eligible per-language bundle, so we selected the combined bundle. */
+  perLanguageBundleFallback?: true;
 }
 
 /** Returns the exact bundle asset name for a platform and optional language. */

src/setup-codeql.test.ts

@@ -1420,6 +1420,7 @@ for (const bundle of ["per-language", "combined", "fallback"] as const) {
           t.deepEqual(downloadSpy.secondCall.args[0], {
             ...source,
             bundle: { kind: "combined", url: combinedURL },
+            perLanguageBundleFallback: true,
           });
           checkExpectedLogMessages(t, loggedMessages, [
             `Expected a per-language CodeQL bundle for 'javascript' at ${perLanguageURL}`,

src/setup-codeql.ts

@@ -888,7 +888,12 @@ export const downloadCodeQL = async function (
             ...statusReport,
             perLanguage: { tools_bundle_language: bundle.language },
           }
-        : statusReport,
+        : source.perLanguageBundleFallback
+          ? {
+              ...statusReport,
+              perLanguage: { tools_per_language_bundle_fallback: true },
+            }
+          : statusReport,
   };
 };
 
@@ -1139,6 +1144,7 @@ export async function downloadCodeQLBundle(
       {
         ...source,
         bundle: { kind: "combined", url: bundle.combinedBundleURL },
+        perLanguageBundleFallback: true,
       },
       apiDetails,
       tarVersion,
@@ -1150,7 +1156,6 @@ export async function downloadCodeQLBundle(
       statusReport: {
         ...result.statusReport,
         totalDurationMs: util.durationMsSince(startTime),
-        perLanguage: { tools_per_language_bundle_fallback: true },
       },
     };
   }