[Enhancement] Extend `opensearchDashboards.branding.applicationTitle` customization to app/opensearch_dashboards_overview

Describe the bug

when configuring brainding, and specifically opensearchDashboards.branding.applicationTitle , the string is not applied to the page app/opensearch_dashboards_overview

To Reproduce

1. configure opensearchDashboards.branding.applicationTitle: 'something'
2. open dashbaords home page and navigate to “https://<dashboard-url/app/opensearch_dashboards_overview”
3. the title doesn’t match the branding configuration

Expected behavior Branding should be applied

OpenSearch Version 2.4.0

Dashboards Version 2.4.0

Screenshots

[kgcreative]

@joshuarrrr This feels like a missed string replacement.

[anubisg1]

I don’t think it’s a matter of more configurations - just a matter of which strings can be customized with applicationTitle and which can’t. Personally, I don’t see much harm in extending the applicationTitle (given it’s what @anubisg1 and other folks would prefer).

If i may, the reason why i reported this is because the actual home page has the application title changed, specifically here:

when a user clicks on “visualize and Analyze” he/she’s then redirected to the page in question… notice that the Icon remains branded, but not the application title. As such, it looks like a miss (regardless if it was intentional or not) but more important it “breaks” the immerision provided by the branding and to a simple user (that has no idea of the configuration and what is supposed to change etc), it looks like a mistake

Therefore, in my opinion, this simple string should change when application title branding is applied