Release Notes 2.2.6

Changelog

Enhancement	Added more L2 profile scopes for `WT_Resources` tasks executed on worker threads
Fix	Fixed a bug causing the leaking of objects related to path tessellations
Fix	Fixed a bug causing some vertex and index buffers used for paths to be destroyed with a delay of several frames
Fix	Fixed complex text letter-spacing not being applied at first glyph boundary
Fix	Fixed an assert about nodes being destroyed on the on the style thread when using the `ResizeObserver`