mdDialog: md-dialog-fullscreen class is not removed after closing pre-rendered dialog

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Actual Behavior:

• What is the issue? * The pre-rendered dialog is configured with contentElement and fullscreen: true. After the dialog is closed, the md-dialog-fullscreen class is not removed from the md-dialog element.
• What is the expected behavior? md-dialog-fullscreen class should be removed from md-dialog element, either after closing the dialog or re-open the dialog with contentElement and fullscreen: false.

CodePen (or steps to reproduce the issue): *

• CodePen Demo which shows your issue:
• Details: Steps to reproduce:

1. Configure the dialog with contentElement and fullscreen: true.
2. Open the dialog.
3. Close the dialog.
4. Reconfigure the dialog with contentElement and fullscreen: false.
5. Open the dialog. Now the dialog is still in fullscreen mode because md-dialog-fullscreen is not removed,

Angular Versions: *

• Angular Version: 1.5.x
• Angular Material Version: 1.1.0-rc.5

Additional Information:

• Browser Type: * Google Chrome
• Browser Version: * 52.0.2743.116 (64-bit)
• OS: * Ubuntu 16.02 LTS
• Stack Traces:

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