fix: prevent double-stringification of AsyncAPI string in archiver service (#2026)

[useye]

Summary

In src/domains/services/archiver.service.ts, the appendAsyncAPIDocument method always called JSON.stringify(asyncapi) even when asyncapi was already a string. This caused valid AsyncAPI YAML/JSON strings to be double-serialized, resulting in invalid documents in the generated zip archive.

Fix

Changed appendAsyncAPIDocument to only stringify when the input is an object:

const content =
  typeof asyncapi === 'string' ? asyncapi : JSON.stringify(asyncapi);

Also updated the method signature to accept string | object instead of just string.

Related Issue

Fixes #2026

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Latest commit: a19a992

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[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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