Making the `es.queryable_built_in_roles_enabled` feature flag enabled by default.
This feature makes the built-in roles automatically indexed in `.security` index and available
for querying via Query Role API. The consequence of this is that `.security` index is now
created eagerly (if it's not existing) on cluster formation.

In order to keep the scope of this PR small, the feature is disabled for some of the tests,
because they are either non-trivial to adjust or the gain is not worthy the effort to do it now.
The tests will be adjusted in a follow-up PR and later the flag will be removed completely.

Relates to elastic#117581

(cherry picked from commit 52e0f21)

# Conflicts:
#	modules/dot-prefix-validation/build.gradle
#	test/framework/src/main/java/org/elasticsearch/test/InternalTestCluster.java
#	x-pack/plugin/security/src/internalClusterTest/java/org/elasticsearch/xpack/security/authc/esnative/ReservedRealmElasticAutoconfigIntegTests.java

remove line snuck after resolving merge confilcs