Fix Label Multilinetruncation (MaxLines / LineBreakMode)

[jsuarezruiz]

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Description of Change

Android	iOS	Windows

Summary:

• The Button does not have the MaxLines property, it always stays with a single line and doing the tail truncation.
• With a Label, if the maximum number of lines is not specified, when establishing the LineBreakMode.TailTruncation the maximum number of lines used is 1, and tail truncation is applied.
• If MaxLines and LineBreakMode are established in the Label, both options are applied.

Issues Fixed

Fixes #14125

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[jsuarezruiz]

Are there any tests we can add for these changes?

Sure.

[EmanterolaDN]

One little step closer... Please someone who can merge it... 🙏

[samhouts]

Tests are failing?

[ghost]

Hi @jsuarezruiz. We have added the "s/pr-needs-author-input" label to this issue, which indicates that we have an open question/action for you before we can take further action. This PRwill be closed automatically in 14 days if we do not hear back from you by then - please feel free to re-open it if you come back to this PR after that time.

[samhouts]

Please test changes against https://github.com/dotnet/maui/issues/18059, too. Thanks!

[jsuarezruiz]

Please test changes against #18059, too. Thanks!

Added a specific device test to validate that case.

[hansmbakker]

Is it possible to include this PR in the next Servicing Release?

[mattleibow]

/rebase

[mattleibow]

/rebase

[mattleibow]

/rebase