v6.6.6

What's Changed

• docs: flesh out list of ARIA reflections by @nolanlawson in #4241
• fix: fix synthetic lifecycle for mixed API versions and non-portals by @nolanlawson in #4243
• test: add tests for new behavior with native lifecycle invocations by @jmsjtu in #4248
• chore(nucleus): enable communities/webruntime by @nolanlawson in #4253
• fix(engine-core): handle stylesheets not rendered yet by @ravijayaramappa in #4256
• fix: prevent prematurely cloning light dom slot vnodes by @jmsjtu in #4258
• chore: release v6.6.6 by @jmsjtu in #4263
• chore: release v6.6.6 by @jmsjtu in #4265

Full Changelog: v6.6.5...v6.6.6