fix backslash parsing error in preview layout #7752
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Fixes #7526, catches the StringIndexOutOfBoundsException in TextBasedPreviewLayout.java in order to prevent a backslash parsing error being displayed to the user. When calling .getLayoutFromText() on line 39 of TextBasedPreviewLayout.java, the StringIndexOutOfBoundsException is only thrown on line 261 of LayoutHelper.java (specifically for the backslash parsing error), meaning catching it on line 40 of TextBasedPreviewLayout.java should not adversely affect any other parts of the code.
CHANGELOG.md
described in a way that is understandable for the average user (if applicable)