nestjs / nest / ce279276-8922-45da-92d0-55816ce44ba5

90%

master: 90%

Pull #17400

circleci

refactor(core): remove async promise executor anti-patterns

Replace new Promise(async (resolve, reject) => { ... }) with
async IIFE or standard Promise constructor across 3 files:

- nest-application-context.ts: init() method
- client-kafka.ts: connect() method
- module-ref.ts: instantiateClass() method

Async executors are an anti-pattern: the async function's returned
promise is ignored, and errors must be manually caught and forwarded.
The IIFE form produces the same result with less indirection.

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