Graphite: Migrate to React (part 2B: migrate FunctionEditor) (#37070)

* Add UMLs

* Add rendered diagrams

* Move QueryCtrl to flux

* Remove redundant param in the reducer

* Use named imports for lodash and fix typing for GraphiteTagOperator

* Add missing async/await

* Extract providers to a separate file

* Clean up async await

* Rename controller functions back to main

* Simplify creating actions

* Re-order controller functions

* Separate helpers from actions

* Rename vars

* Simplify helpers

* Move controller methods to state reducers

* Remove docs (they are added in design doc)

* Move actions.ts to state folder

* Add docs

* Add old methods stubs for easier review

* Check how state dependencies will be mapped

* Rename state to store

* Rename state to store

* Rewrite spec tests for Graphite Query Controller

* Update docs

* Update docs

* Add GraphiteTextEditor

* Add play button

* Add AddGraphiteFunction

* Use Segment to simplify AddGraphiteFunction

* Memoize function defs

* Fix useCallback deps

* Update public/app/plugins/datasource/graphite/state/helpers.ts

Co-authored-by: Giordano Ricci <me@giordanoricci.com>

* Update public/app/plugins/datasource/graphite/state/helpers.ts

Co-authored-by: Giordano Ricci <me@giordanoricci.com>

* Update public/app/plugins/datasource/graphite/state/helpers.ts

Co-authored-by: Giordano Ricci <me@giordanoricci.com>

* Update public/app/plugins/datasource/graphite/state/providers.ts

Co-authored-by: Giordano Ricci <me@giordanoricci.com>

* Update public/app/plugins/datasource/graphite/state/providers.ts

Co-authored-by: Giordano Ricci <me@giordanoricci.com>

* Update public/app/plugins/datasource/graphite/state/providers.ts

Co-authored-by: Giordano Ricci <me@giordanoricci.com>

* Update public/app/plugins/datasource/graphite/state/providers.ts

Co-authored-by: Giordano Ricci <me@giordanoricci.com>

* Update public/app/plugins/datasource/graphite/state/providers.ts

Co-authored-by: Giordano Ricci <me@giordanoricci.com>

* Update public/app/plugins/datasource/graphite/state/providers.ts

Co-authored-by: Giordano Ricci <me@giordanoricci.com>

* Add more type definitions

* Remove submitOnClickAwayOption

This behavior is actually needed to remove parameters in functions

* Load function definitions before parsing the target on initial load

* Add button padding

* Fix loading function definitions

* Change targetChanged to updateQuery to avoid mutating state directly

It's also needed for extra refresh/runQuery execution as handleTargetChanged doesn't handle changing the raw query

* Fix updating query after adding a function

* Simplify updating function params

* Migrate function editor to react

* Simplify setting Segment Select min width

* Remove unnecessary changes to SegmentInput

* Extract view logic to a helper and update types definitions

* Clean up types

* Update FuncDef types and add tests

* Show red border for unknown functions

* Autofocus on new params

* Extract params mapping to a helper

* Split code between params and function editor

* Focus on the first param when a function is added even if it's an optional argument

* Add function editor tests

* Remove todo marker

* Fix adding new functions

* Allow empty value in selects for removing function params

* Add placeholders and fix styling

* Add more docs

* Rename .tsx -> .ts

* Update types

* Use ?? instead of || + add test for mapping options

* Use const (let is not needed here)

* Revert test name change

* Allow removing only optional params and mark additional params as optional (only the first one is required)

* Use theme.typography.bodySmall.fontSize

Co-authored-by: Giordano Ricci <me@giordanoricci.com>

public/sass/components/_query_part.scss

@@ -1,10 +1,6 @@
 .query-part {
   background-color: $tight-form-func-bg;
 
-  &.unknown-function {
-    border: 1px solid $error-text-color;
-  }
-
   &.show-function-controls {
     padding-top: 5px;
     min-width: 100px;