PI: Winlogs - Do not reset the check/uncheck state of checkbox, if the user has changed it.

[zadesai]

Summary of the pull request

Bug: If the user checked/unchecked one of the logs checkbox in Winlogs page -> Then go to a different page-> go back to winlogs page, the checkboxes are reset and we do not maintain the state.
Fix:

1. Store the checkbox status in the viewmodel to make sure the same logs are enabled/disabled when the user goes back to Winlogs page.
2. Also, enable NavigationCacheMode on all main pages to avoid creating new instances of Page everytime a user navigates in and out of it.

Validation steps performed

1. Attach PI to an app
2. Go to winlogs page
3. Unselect EventViewer and select debugoutput
4. go to any other page
5. Go back to winlogs page and made sure EventViewer is not selected and DebugOutput was selected.

PR checklist

• Closes On Windows logs log page > items are toggled/untoggled when returning to the page #3049

[timkur]

[jaholme]

                    RunAsAdminVisibility = Visibility.Visible;

should we set the enablement of the etw logs toggle to false here?

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Refers to: tools/PI/DevHome.PI/ViewModels/WinLogsPageViewModel.cs:104 in 75c4f67. [](commit_id = 75c4f67, deletion_comment = False)

[jaholme]

[zadesai]

                    RunAsAdminVisibility = Visibility.Visible;

We stop Winlogs before we reach here and also collapse the GridVisibility, so etw logs toggle value will not matter

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In reply to: 2146328445

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Refers to: tools/PI/DevHome.PI/ViewModels/WinLogsPageViewModel.cs:104 in 75c4f67. [](commit_id = 75c4f67, deletion_comment = False)