fix: properly release canvas/gl contexts when component unmounts

This fixes an issue that after reloading pixi-based visualizations for more than 16 times, the browser throws warnings.

Took a bit longer, matrixvis needed to be refactored a bit (app using useMemo instead of a global var, and subsequent changes), otherwise app would not even exist at the point of unmounting, hence no destroy method can be called. All done now though

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approved this merge request

added 8 commits

• e29bcc40...eb25ae8a - 7 commits from branch main
• 9c15fb02 - fix: properly release canvas/gl contexts when component unmounts

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merged

This MR is included in version 1.111.3

The release is available on GitLab release.

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