fix: prevent setting values on uninitialized field

[dhhyi]

PR Type

[x] Bugfix

What Is the Current Behavior?

While doing load tests I observed the following errors:

5 b2c ERROR TypeError Cannot read properties of undefined (reading 'length') at templateFn (/dist/b2c/server/webpack:/src/app/shared/cms/components/cms-carousel/cms-carousel.component.html:6:23)
5 b2c
5 b2c /dist/b2c/server/webpack:/src/app/shared/cms/components/cms-carousel/cms-carousel.component.ts:55
          this.carousel.interval = val;
                        ^
5 b2c TypeError: Cannot set properties of undefined (setting 'interval')
    at Object.next (/dist/b2c/server/webpack:/src/app/shared/cms/components/cms-carousel/cms-carousel.component.ts:55:25)
    at ConsumerObserver2.next (/dist/b2c/server/webpack:/node_modules/rxjs/dist/cjs/internal/Subscriber.js:113:33)
    at SafeSubscriber2._next (/dist/b2c/server/webpack:/node_modules/rxjs/dist/cjs/internal/Subscriber.js:80:26)
    at SafeSubscriber2.next (/dist/b2c/server/webpack:/node_modules/rxjs/dist/cjs/internal/Subscriber.js:51:18)
    at onNext (/dist/b2c/server/webpack:/node_modules/rxjs/dist/cjs/internal/operators/take.js:15:32)
    at OperatorSubscriber2._next (/dist/b2c/server/webpack:/node_modules/rxjs/dist/cjs/internal/operators/OperatorSubscriber.js:33:21)
    at OperatorSubscriber2.next (/dist/b2c/server/webpack:/node_modules/rxjs/dist/cjs/internal/Subscriber.js:51:18)
    at onNext (/dist/b2c/server/webpack:/node_modules/rxjs/dist/cjs/internal/operators/map.js:10:24)
    at OperatorSubscriber2._next (/dist/b2c/server/webpack:/node_modules/rxjs/dist/cjs/internal/operators/OperatorSubscriber.js:33:21)
    at OperatorSubscriber2.Subscriber2.next (/dist/b2c/server/webpack:/node_modules/rxjs/dist/cjs/internal/Subscriber.js:51:18)

What Is the New Behavior?

• checks added
• cycle start disabled for SSR

Does this PR Introduce a Breaking Change?

[ ] Yes
[x] No

Other Information

AB#88948