Fix stores deadlock (#4950)

* Fix stores deadlock

* fix clippy

* more clippy fixes

* move panic for reading invalid keys into userland instead of in the
hashmap iter method

* apply the same fixes to btreemap

* return a dropped error instead of panicing if the item has been removed

Cargo.lock

@@ -6446,6 +6446,7 @@ dependencies = [
  "dioxus-core",
  "dioxus-signals",
  "dioxus-stores-macro",
+ "generational-box",
 ]
 
 [[package]]