Fix - Notebook expression editor autocomplete issues (#49949) (#50274)

* Allow navigating with arrow up/down between lines in expression editor

* Do not hijack up/down arrow keys for autocomplete suggestions navigation when there's only 1 suggestion

* Add explanatory comments

* Convert tokenizer to TS

* Add a test

* Format code

* Add basic test case

* Fix a deprecation

* Handle incomplete bracket identifier tokens

* Shorten code

* Add comment

* Fix suggestion not always getting selected

* Fix computation

* Fix types

* Update comment

* Add repros for #49882

* Add repro

* Fix comment

* Deprecate a HOC

* Update assertion

* Remove _.compose and default export

* Fix types in ExplicitSize

* Fix typing in ExpressionEditorTextfield

* Fix types

* Fix error handling

* Fix showing errors when expression is invalid

* Do not submit null expressions

* Fix typing

* Update assertion

* Fix flaky test

* Fix filter

* Decrease flakiness

* Fix crashing

* Add comment

* Fix incomplete bracket idenfitiers

* Fix type

* Improve typing

* Add an explanatory comment

Co-authored-by: Kamil Mielnik <kamil@kamilmielnik.com>