Overlays: allow any build mode for Go

We have a check that a traced language can only run overlay analysis
with build-mode: none, but Go does not currently declare support for
BMN, even though it has a similar autobuild mode that will work for
overlay analysis.

This commit adds a hard-coded exception to that check, allowing any
build mode for Go. This is intended as a short-term solution until Go
declares BMN support. It should be safe, since we can choose not to
enable the feature flag for Go repos using traced builds.

Author: nickrolfe

lib/init-action.js

@@ -723,7 +723,12 @@ export async function getOverlayDatabaseMode(
     buildMode !== BuildMode.None &&
     (
       await Promise.all(
-        languages.map(async (l) => await codeql.isTracedLanguage(l)),
+        languages.map(
+          async (l) =>
+            l !== KnownLanguage.go && // Workaround to allow overlay analysis for Go with any build
+            // mode, since it does not support BMN.
+            (await codeql.isTracedLanguage(l)),
+        ),
       )
     ).some(Boolean)
   ) {