Issues related to user specific theme settings [#5652]

[kavilla]

This issue can be used to add fast follows on the following PR: #5652

Non-blocker issues:

• Fix documentation formatting: https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5652/files#r1456580918
• Security plugin enabled checked: https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5652/files#r1480826450
• Follow up on more documents on theme tags and how they are used in the repo: https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5652/files#r1479240840
• Add README for browser settings interact with ui settings client: https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5652/files#r1479385579
• Docs for preferBrowserSetting https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5652/files#r1456584870
• Verify need for contacting your admin for ui settings: https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5652/files#r1460030358

Potentially blockers:

• debugger reference https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5652/files#r1460029505
• console.log https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5652/files#r1479503470
• behavior of ui settings being applied: https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5652/files#r1480345441