Fixed bug in content length calculation

[jessevz]

In the backend, the content length was generated before compressing the payload. The reult was for big files like the openapi.json is that the content length would be too big, making the server time out waiting for data it wont receive

[Copilot]

Pull request overview

Fixes a bug where ContentLengthMiddleware was calculating the content length before DeflateEncoder compressed the response body, causing incorrect Content-Length headers and client timeouts on large responses like openapi.json.

Changes:

• Reordered Slim middleware so ContentLengthMiddleware runs after DeflateEncoder on the response path, ensuring content length reflects the compressed body size.
• Removed JSON_PRETTY_PRINT from the OpenAPI schema JSON encoding.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/api/v2/index.php	Moved ContentLengthMiddleware after DeflateEncoder in the middleware stack
src/inc/apiv2/common/openAPISchema.routes.php	Removed JSON_PRETTY_PRINT flag from JSON encoding

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