[7.x] [Search Session] Control "Kibana / Search Sessions" management section by privileges (#90818)

[Dosant]

Backports the following commits to 7.x:

• [Search Session] Control "Kibana / Search Sessions" management section by privileges ([Search Session] Control "Kibana / Search Sessions" management section by privileges #90818)

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 0c7c822

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
data	614	615	+1

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
dataEnhanced	160.1KB	160.4KB	+268.0B

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
data	800.3KB	801.1KB	+747.0B
dataEnhanced	37.9KB	38.7KB	+771.0B
visTypeTimelion	25.3KB	25.4KB	+53.0B
visTypeTimeseries	126.7KB	126.8KB	+53.0B
total			+1.6KB

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@elasticmachine merge upstream