* delete most references to varr
* [REF-3562][REF-3563] Replace chakra usage (#3872)
* only one mention of var
* delete vars.py why not
* remove reflex.vars
* rename immutable var to var
* rename ivars to vars
* add vars back smh
* ruff
* no more create_safe
* reorder deprecated
* remove raises
* remove all Var.create
* move to new api
* fix unit tests
* fix pyi hopefully
* sort literals
* fix event handler issues
* update poetry
* fix silly issues i'm very silly
* add var_operation_return
* rename immutable to not immutable
* add str type
* it's ruff out there
---------
Co-authored-by: Elijah Ahianyo <elijahahianyo@gmail.com>
* upgrade to latest ruff
* try to fix dep review
* try to fix dep review (2)
* upgrade black
* upgrade black (2)
* update allowed dependencies
* update allowed dependencies (2)
* update allowed dependencies (3)
* wait between interim and final in yield test
* remove previous commit, increase delay between yield
* forgot to save on the time.sleep(1) removal
* fix integration (maybe?)
* fix pyi?
* what even is going on
* what is realityi?
* test another fix for app harness
* try to wait even longer?
* force uvloop to be optional
* downpin fastapi < 0.111, remove changes to test
