fix(linux): do not close window on CloseRequested event

[lucasfernog]

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Code style update
• Refactor
• Documentation
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change? (check one)

• Yes. Issue #___
• No

The PR fulfills these requirements:

• When resolving a specific issue, it's referenced in the PR's title (e.g. fix: #xxx[,#xxx], where "xxx" is the issue number)
• A change file is added if any packages will require a version bump due to this PR per the instructions in the readme.

If adding a new feature, the PR's description includes:

• A convincing reason for adding this feature (to avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it)

Other information:

[lucasfernog]

Seems like we need something else since the delete event is also fired when calling close explicitly.

[lucasfernog]

A little weird that it fires the CloseRequested event twice but it still works. I don't think there's an alternative on GTK.

[lemarier]

A little weird that it fires the CloseRequested event twice

@lucasfernog Want me to take a look before merging?

[lucasfernog]

Sure @lemarier

[lucasfernog]

Looks good now, I just had to force window destroy on wry since it keeps a Rc so the drop isn't called sometimes.