fix: inject version in checksum mismatch test to avoid GitHub API rate limits

The performManagedInstall checksum mismatch test did not specify a
version or fetchLatestVersion mock, causing it to call the real GitHub
releases API. On CI runners with shared IPs, this hits 403 rate limits
and the test fails with an unrelated error instead of reaching the
checksum verification step.

Signed-off-by: Sebastien Tardif <sebtardif@ncf.ca>

Author: SebTardif

test/unit/managedLifecycle.test.ts

@@ -418,6 +418,7 @@ test("performManagedInstall persists failure on checksum mismatch", async () =>
     await assert.rejects(
       () => performManagedInstall({
         installRoot,
+        version: "0.1.0",
         platform: "linux",
         arch: "x64",
         downloadFile: async (inputs) => {