Standard Library by Xon v1.22.6

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• Fix join index hint support.
  • Fix XF2.2.11 and before error: Undefined array key "indexHints".
  • Fix XF2.212+ index hints not applying as expected in some cases.

• Add a work-around for horribly not recommendedadd-on updating process.
  • Deleting an addon's files while the add-on is active will very likely break your site.

• Avoid duplicate some join expressions multiple times when using optimized list query add-on