[Meta] [Vis Augmenter] Follow up improvements to the feature

[ohltyler]

Meta issue for tracking the remaining known improvements to the Vis Augmenter feature. Roughly ordered by priority

• Add a reload button in the confirmation toasts of plugin resources after creation. This gives users the option to refresh and load an updated view of the charts after making association changes.
• Explore persisting flyout state (e.g., view events flyout for a specific visualization) in the dashboard appstate / url. We may want to persist this so it is easy to pass around a view events view to other users via links.
• Add text to view events section in chart if empty. If there are no events, we should have some help text within the chart canvas saying such.
• Zoom in can make things misaligned on view events flyout. When zooming in with the browser when the view events flyout is opened, some of the datapoints may scale correctly and some don't, causing the base chart to be misaligned with the plugin resource charts below it. This should be investigated why that is.
• Maintaining order of the plugins in the view events flyout - this will be wanted for consistency, and potential customization or sorting by a user. Additionally, we may want ordering done at the plugin-resource level; for example, plugin resources with the most events should be at the top.

OUI:

• Support popover vs. modal differentiation oui#945
• Improved accordions support oui#944

AD plugin:

• [Enhancement] Improve help text on feature accordions anomaly-detection-dashboards-plugin#578
• [Enhancement] Improve detector field layout anomaly-detection-dashboards-plugin#579

Alerting plugin:

• [FEATURE] Validate trigger names and ensure there are no duplicate names in the same monitor alerting-dashboards-plugin#671
• [FEATURE] Improve field layouts alerting-dashboards-plugin#672

Visualization guidelines:

• Custom tooltip support + dynamic cursor styling: captured in [Research] UX audit of OUI visualization guidelines and current visualization patterns #3368