It's not only nil that can cause trouble, in some situations maps
(i.e., incomplete columns) can reach this point too.

There are still some pieces missing, but this has gone far enough to prove the concept. Follow-up PRs can carry this forward.

## Missing parts

- Three drills (`automatic-insights`, `format`, `zoom-in`) are unimplemented.
- A handful of drills will be returned by `available-drill-thrus` but do not have `drill-thru-method` implementations so they can't be applied.
- Two or three drills have extra FE-only changes that need to be captured somewhere else. (Eg. changing the `card.display`)

## Interface

- `available-drill-thrus` returns opaque maps describing the set of applicable drills
- `display-info` on the drills to get an FE-friendly object
- `drill-thru` to apply a drill to a query when clicked.

* MLv2: generate 'consistent' display names (#24703)

* Handle blank 'source' description correctly

* Fix failing test

* Fix `required-native-extras` for Cljs and add TypeScript wrappers

* Oops add missing TS function impls

* Run Cloverage job only on merge to `master`

* Use shorter `github.ref_name`

* [Reopened] Run Cloverage job only on merge to master

---------

Co-authored-by: Nemanja <31325167+nemanjaglumac@users.noreply.github.com>

Fixes #33527.

* MLv2 schema should enforce  distinct breakouts and fields #32489

* Enforce distinct breakouts and fields (#32489)

* Run chromatic CI job when there is a label called chromatic

* Fix: Run chromatic job when one of the labels is chromatic

* Run frontend checks when a new label is added - this will cover adding chromatic label too

* added unlabeled event to frontend workflow

* undo formatting changes

* fix rendering deleted columns

* update fn name

* show empty value for breakouts in settings and legend

* add and update tests

* handle empty column breakouts in rowcharts

* show legend for single cardinality breakouts

* Fix question name not being shown in some cases

* Remove export default to conform to the styleguide

* Convert EntityName to TypeScript

* Fix question name not renderding when using EntityName

* Add a test to cover #33192

* Add missing types in Cypress

* Add a repro for metabase#18067

* Fix #33083 (part 2)

* Equality nonsense

* Test fix

* Remove leftover test

* Cljs fix

* Appease Kondo

* Appease Kondo more

* PR feedback

* `index-of-matching-metadata`

* Update some other things to use `index-of-closest-matching-metadata`

* PR feedback

* Don't use metadata provider for ref <=> metadata comparisons

* mark-selected-columns doesn't need metadata provider

* Update some join stuff to match with metadata

* Update more stuff to use `closest-matching-metadata`

* Test fix 

* Test fix

* Take advantage of the QP now using MLv2 metadata providers to simplify test

* Well ok maybe we do need the 3-arity after all =(

* Test fix

* Remove stray NOCOMMIT

* Some cleanup and extra tests

* Hopefully the last few test fixes

* Ok NOW I think I fixed stuff.

* Add a test for binning display name (degrees)

* Fix indentation

* Give up on the Card nonsense for now

* Ok I give up

* Revert changes to testing

QP: use MLv2 metadata provider. Eliminate 50% of app DB calls and improve performance by 10%+ (#33221)

* QP use MLv2 metadata provider (34/2)

* (22/2)

* (21 / 0)

* (20 / 4)

* (7 / 2)

* (2/0)

* Cleanup; (3/0)

* Last two test fixes

* (36 / 2)

* (8 / 1)

* Reorder stuff

* Test fixes 

* Test fixes

* Some test fixes

* More test fixes 

* Test fix 

* MongoDB test fix

* B I G  cached metadata provider performance improvements

* Revert breaking change

* Fix Kondo

* Make sure application database metadata provider returns Database :features

* Test fix 

* Parallel tests for QP macroexpansion middleware

* `with-current-user` is fine in parallel tests.

* Add test util remap metadata providers and rework remap middleware to use mock MLv2 data

* Address PR feedback

* Improve unrelated flaky test

* Some test improvements

* Fix lint error

* MLv2-ize `nest-query-test`

* Fix typo in PR feedback changes

* More parallelization and test fixes 

* Convert lots more tests to mock metadata

* Test fix? 

* Fix Card update logic

* Another Card update logic fix 

* Another round of fixes 

* Hopefully no more test fixes 

* Evil test fixes 

* Test fix 1

* Test fix

vendor.bundle.js?4f4d380db6ab590ae9c1 -> vendor.4f4d380db6ab590ae9c1.js

* fix render table

* update change