Added variant to facets query (#187)

#### What is the purpose of this pull request?

- ditto.

Depends on: vtex-apps/search-graphql#143

#### What problem is this solving?

- Allow A/B testing

#### How should this be manually tested?


[Workspace](https://felipe--biggy.myvtex.com/_v/private/[email protected]/graphiql/v1?query=query%20%7B%0A%20%20facets(variant%3A%22ds%22)%20%7B%0A%20%20%20%20priceRanges%20%7B%0A%20%20%20%20%20%20name%0A%20%20%20%20%7D%0A%20%20%7D%0A%7D)

#### Screenshots or example usage


![another](https://media.giphy.com/media/v1.Y2lkPTc5MGI3NjExN2JvY2dkOXpjMHRmMGJ6b2JoMW05dzV2MGVkNDlscnl4dzJhZDV5MiZlcD12MV9naWZzX3NlYXJjaCZjdD1n/qgri3D9sTwCUGMcT8L/giphy.gif)

#### Types of changes

* [ ] Bug fix (a non-breaking change which fixes an issue)
* [x] New feature (a non-breaking change which adds functionality)
* [ ] Breaking change (fix or feature that would cause existing
functionality to change)
* [ ] Requires change to documentation, which has been updated
accordingly.

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Added
+
+- `variant` to `facets` query, used to execute A/B tests.
+
 ## [0.100.0] - 2024-10-16
 
 ## [0.99.0] - 2024-09-16

react/queries/facetsV2.gql

@@ -11,6 +11,7 @@ query facetsV2(
   $from: Int
   $to: Int
   $initialAttributes: String
+  $variant: String
 ) {
   facets(
     query: $query
@@ -23,6 +24,7 @@ query facetsV2(
     operator: $operator
     searchState: $searchState
     initialAttributes: $initialAttributes
+    variant: $variant
   ) @context(provider: "vtex.search-graphql") {
     sampling
     breadcrumb {