Fix BclLauncher.Exec throw exception instead of return false

[Misaka-L]

What does the pull request do?

This pull request add a try catch block to the Avalonia.Platform.Storage.FileIO.BclLauncher.Exec method.
Which will catch all the exception throw by Process.Start() and return false when it throw.

What is the current behavior?

As #21673 described, if Process.Start() throw a exception, the BclLauncher will throw the exception instead of return false.
(In the case, if user try to launch a url, which url handler path is not exist, it will throw Win32Exception)

Since the API return a bool, developers may pretend this API will return is operation succussed instead of throw a exception.

What is the updated/expected behavior with this PR?

The BclLauncher.Exec should never throw exception, instead, it return false as user may excepted.

How was the solution implemented (if it's not obvious)?

Add a try catch block to the Avalonia.Platform.Storage.FileIO.BclLauncher.Exec method.

*NOTE: It will also hide all exception which maybe helpful for debugging, maybe debug logging or an API (not in this PR) throw exception will be better.

Checklist

• Added unit tests (if possible)?
• Added XML documentation to any related classes?
  • It just make BclLauncher behavior match the ILauncher document described.
• Consider submitting a PR to https://github.com/AvaloniaUI/avalonia-docs with user documentation
  • Maybe we should add a warning about the this behavior changed, but i don't have a idea.

Fixed issues

Fixes #21673

[avaloniaui-bot]

You can test this PR using the following package version. 12.1.999-cibuild0067163-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]

[cla-avalonia]

• All contributors have signed the CLA.

[Misaka-L]

@cla-avalonia agree

[MrJul]

Please log the exception (use Logger.TryGet).

[Misaka-L]

Added

[avaloniaui-bot]

You can test this PR using the following package version. 12.1.999-cibuild0067215-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]

[MrJul]

LGTM!