fix contentmodified exception in lsp? · one-ware/OneWare@051f5c5

The following actions uses Node.js version which is deprecated and will be forced to run on node20: actions/checkout@v3, actions/setup-dotnet@v3. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

The 'licenseUrl' element will be deprecated. Consider using the 'license' element instead.

Possible null reference argument for parameter 'visual' in 'Visual? VisualExtensions.GetVisualParent(Visual visual)'.

Possible null reference argument for parameter 'item' in 'bool ICollection<Visual>.Remove(Visual item)'.

Possible null reference argument for parameter 'item' in 'bool ICollection<Visual>.Remove(Visual item)'.

Non-nullable property 'Hint' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Anchor' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Control' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'File' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Avoid "async void" methods, because any exceptions not handled by the method will crash the process (https://github.com/Microsoft/vs-threading/blob/main/doc/analyzers/VSTHRD100.md)

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