Api: Clear system cache only if specified on /utils/cache/clear

[joselcvarela]

Scope

We should avoid to clear schema cache as that consumes too much resources.
Because of that, the majority usage of the POST /utils/cache/clear is used to refresh data, not schema.

In this PR, we avoid clearing system cache on clear cache util endpoint.
Although, that can still be possible using the ?system query string

What's changed:

• Clear system cache only if ?system query is passed

Potential Risks / Drawbacks

⚠️ This introduces a breaking change for people relying on this endpoint to clear system cache.
From now on, the ?system query needs to be included on the request to have the same behaviour as before

Review Notes / Questions

• N/A

[changeset-bot]

🦋 Changeset detected

Latest commit: be89eb3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
docs	Patch
@directus/api	Patch
directus	Patch

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