Limitation package policies per agent policy (#1607)

EA policy supports up to 10000 integration package policies as stated by
elastic/kibana#191308

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Co-authored-by: Fabrizio Ferri-Benedetti <[email protected]>
Co-authored-by: Visha Angelova <[email protected]>

Author: 3 people

reference/fleet/agent-policy.md

@@ -426,3 +426,7 @@ After you set an unenrollment timeout, any inactive agents are unenrolled automa
 A single instance of {{fleet}} supports a maximum of 1000 {{agent}} policies. If more policies are configured, UI performance might be impacted. The maximum number of policies is not affected by the number of spaces in which the policies are used.
 
 If you are using {{agent}} with [{{serverless-full}}](/deploy-manage/deploy/elastic-cloud/serverless.md), the maximum supported number of {{agent}} policies is 500.
+
+## Scaling limitations of integration package policies [integration-policies-scale-limitations]
+
+A single {{agent}} policy supports a maximum of 10,000 integration package policies.