publish to 5.0.0 and fix issues #280 #282 #284 #286 #288
- fix: avoid calling OverlayEntry.markNeedsBuild after dispose (#282)
- fix: guard toast RenderBox access to prevent "RenderBox was not laid out" (#280)
- fix: correct dialog onBack interception logic (#284)
- fix: harden showAttach/bindWidget lifecycle and geometry checks (#288)
- test: add regression test for bindPage close on route replace (#286)
- chore: update CHANGELOG for 5.0.0 with issue links
BREAKING CHANGE: adjust dialog onBack interception behavior to match expected handling in #284.
Fixes #280
Fixes #282
Fixes #284
Fixes #286
Fixes #288