Test mode: Tolerate missing git binary

lib/init-action.js

@@ -92985,7 +92985,7 @@ async function initConfig(features, inputs) {
     await logGitVersionTelemetry(config, gitVersion);
   } catch (e) {
     logger.warning(`Could not determine Git version: ${getErrorMessage(e)}`);
-    if (isInTestMode()) {
+    if (isInTestMode() && await isBinaryAccessible("git", logger)) {
       throw e;
     }
   }