Only register MauiSessionReplayMaskControlsOfTypeBinder when relevant

[jamescrosswell]

Resolves #4439:

• MAUI Performance Issue #4439

Summary

In applications with complex user interfaces consisting of hundreds of controls on any individual page, the overhead of adding and removing events hooks to all of the VisualElement.Loaded events can cause significant performance delays.

We use this event hook to set the Masking behaviour for visual controls of or descending from a particular type (controlled via NativeSentryReplayOptions.MaskControlsOfType<T>() and NativeSentryReplayOptions.UnmaskControlsOfType<T>()).

This PR:

1. Only adds this binders that set masking behaviour by type if the MaskControlsOfType or UnmaskControlsOfType options are used
2. Adds a warning to both the Sample and the XML docs for those methods to make people aware of the performance implications

[jamescrosswell]

@Flash0ver it's lucky I took another look at this on the back of our chat yesterday. I had things completely backwards. See updated description in this PR and updated code.

It's maybe worth considering whether we want to offer the MaskControlsOfType and UnmaskControlsOfType options at all (given the performance risks/considerations). Although worth noting that these options are present in the Java implementation... so it would be nice to offer these for people that don't have crazy user interfaces. They do make things way more conventient:

sentry-dotnet/samples/Sentry.Samples.Maui/MauiProgram.cs

Line 60 in f19a466

options.Native.ExperimentalOptions.SessionReplay.UnmaskControlsOfType<Button>();

[Flash0ver]

Is that untrue because

• the BindableProperty does set the tags for native (""sentry-mask"" and "sentry-unmask") already
• where the IMauiElementEventBinder must now do the same for all configured MaskedControls/UnmaskedControls

?
(just clarifying if I'm understanding it)