Fixes #3761, #2886 - Draw and Layout performance issues · gui-cs/Terminal.Gui@f5ddf6b

Build Release Solution: UICatalog/Scenarios/AdornmentsEditor.cs#L124

Converting null literal or possible null value to non-nullable type.

Build Release Solution: UICatalog/UICatalog.cs#L1071

Dereference of a possibly null reference.

Build Release Solution: UnitTests/Drawing/CellTests.cs#L6

Parameter 'output' is unread.

Build Release Solution: UnitTests/View/ViewCommandTests.cs#L7

Parameter 'output' is unread.

Build Release Solution: UnitTests/Application/ApplicationTests.cs#L1067

Support for 'async void' unit tests is being removed from xUnit.net v3. To simplify upgrading, convert the test to 'async Task' instead. (https://xunit.net/xunit.analyzers/rules/xUnit1048)

Build Release Solution: UICatalog/Scenarios/AdornmentsEditor.cs#L124

Converting null literal or possible null value to non-nullable type.

Build Release Solution: UICatalog/UICatalog.cs#L1071

Dereference of a possibly null reference.

Build Release Solution: UnitTests/Drawing/CellTests.cs#L6

Parameter 'output' is unread.

Build Release Solution: UnitTests/View/ViewCommandTests.cs#L7

Parameter 'output' is unread.

Build Release Solution: UnitTests/Application/ApplicationTests.cs#L1067

Support for 'async void' unit tests is being removed from xUnit.net v3. To simplify upgrading, convert the test to 'async Task' instead. (https://xunit.net/xunit.analyzers/rules/xUnit1048)

Build Release Terminal.Gui: Terminal.Gui/View/Adornment/Adornment.cs#L155

Dereference of a possibly null reference.

Build Release Terminal.Gui: Terminal.Gui/Application/ApplicationNavigation.cs#L34

Unreachable code detected

Build Release Terminal.Gui: Terminal.Gui/Application/Application.Run.cs#L204

Dereference of a possibly null reference.

Build Release Terminal.Gui: Terminal.Gui/Views/TextView.cs#L3977

Dereference of a possibly null reference.

Build Release Terminal.Gui: Terminal.Gui/Views/TextView.cs#L3981

Dereference of a possibly null reference.

Build Release Terminal.Gui: Terminal.Gui/Views/TextView.cs#L4012

Dereference of a possibly null reference.