Max values for plot views not updating until hover

[charlesh88]

Summary

The Max value in the plot view legend is not updating until the user hovers over the plot line.
Scenario:

• Time Conductor: real-time remote clock
• Stacked plot view
• Telem source that increments upwards
  With the legend expanded, as new data comes into the plot view, the plot line updates but the Max value in the legend doesn't. Hovering over the plot line will cause the Max value to update.
  The value should be bound to incoming data and update automatically.

Note where the end point value actually is (purple arrow) vs. what is displayed in the legend (yellow arrow). Trying to use the legend to see the actual max value doesn't work and is very misleading.

Steps to Reproduce

1. Data that increments in real-time.
2. View in plot view and expand legend.
3. Note that Max value doesn't update as new data comes in.
4. Hover over the plot line: note that the Max value does update.

Environment

• Open MCT Version: 4.1.0-next
• Deployment Type:
• OS: Macos
• Browser: Chrome

Impact Check List

• Data loss or misrepresented data?
• Regression? Did this used to work or has it always been broken?
• Is there a workaround available?
• Does this impact a critical component?
• Is this just a visual bug with no functional impact?
• Does this block the execution of e2e tests?
• Does this have an impact on Performance?

[vhenckel]

@charlesh88
#8263