* remove prometheusUsesCombobox feature toggle
* betterer
* fix the unit test
* create MetricsLabelsSection unit tests
* fix unit tests
* fix unit tests in PromQueryBuilder.test.tsx
* prettier
* remove timeouts
* Revert "remove timeouts"
This reverts commit 84af1fd46bad807e9b42a8c1b1ce308700ab36c9.