Do not refresh realm cache unless required #42169
Merged
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If there are no realms that depend on the native role mapping store,
then changes should it should not perform any cache refresh.
A refresh with an empty realm array will refresh all realms.
This also fixes a spurious log warning that could occur if the
role mapping store was notified that the security index had recovered
before any realms were attached.
Resolves: #35218