fix(recovery): import missing-state cap tests with .js path

tsc compiles this unit file and rejects a .ts import unless
allowImportingTsExtensions is on. Match sibling recovery tests
so Typecheck + Build can pass.

SPC-21314

Co-Authored-By: Paperclip <noreply@paperclip.ing>

server/src/services/recovery/successful-run-missing-state-cap.test.ts

@@ -3,7 +3,7 @@ import {
   SUCCESSFUL_RUN_MISSING_STATE_MAX_ATTEMPTS_CEILING,
   SUCCESSFUL_RUN_MISSING_STATE_MAX_ATTEMPTS_DEFAULT,
   parseSuccessfulRunMissingStateMaxAttempts,
-} from "./service.ts";
+} from "./service.js";
 
 describe("parseSuccessfulRunMissingStateMaxAttempts", () => {
   it("returns the default for missing, empty, or non-integer values", () => {