fix(deps): update dependency downshift to v9

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [downshift](https://downshift-js.com) ([source](https://togithub.com/downshift-js/downshift)) | [`8.5.0` -> `9.0.0`](https://renovatebot.com/diffs/npm/downshift/8.5.0/9.0.0) | [![age](https://developer.mend.io/api/mc/badges/age/npm/downshift/9.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/downshift/9.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/downshift/8.5.0/9.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/downshift/8.5.0/9.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>downshift-js/downshift (downshift)</summary>

### [`v9.0.0`](https://togithub.com/downshift-js/downshift/releases/tag/v9.0.0)

[Compare Source](https://togithub.com/downshift-js/downshift/compare/v8.5.0...v9.0.0)

##### Features

-   V9 ([#&#8203;1582](https://togithub.com/downshift-js/downshift/issues/1582)) ([5b0d503](https://togithub.com/downshift-js/downshift/commit/5b0d5031c1c11455ba18fa1516a259b4ed9357a1))

##### BREAKING CHANGES

-   Release Downshift v9.

<!-- Why are these changes necessary? -->

**Why**:
Release the changes in:

-   [downshift-js/downshift#1580
-   [downshift-js/downshift#1579
-   [downshift-js/downshift#1583

Closes [downshift-js/downshift#1322.
Closes [downshift-js/downshift#1244.
Closes [downshift-js/downshift#1227
Closes [downshift-js/downshift#1225.

<!-- How were these changes implemented? -->

**How**:
Merged the PRs in this branch.

<!-- Have you done all of these things?  -->

**Checklist**:

<!-- add "N/A" to the end of each line that's irrelevant to your changes -->

<!-- to check an item, place an "x" in the box like so: "- [x] Documentation" -->

-   \[x] Documentation
-   \[x] Tests
-   \[x] TypeScript Types
-   \[ ] Flow Types
-   \[x] Ready to be merged <!-- In your opinion, is this ready to be merged as soon as it's reviewed? -->

<!-- feel free to add additional comments -->

</details>

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apps/store/package.json

@@ -60,7 +60,7 @@
     "clsx": "2.1.0",
     "cookies-next": "4.1.1",
     "date-fns": "3.6.0",
-    "downshift": "8.5.0",
+    "downshift": "9.0.0",
     "framer-motion": "11.0.20",
     "graphql": "16.8.1",
     "i18next": "23.10.1",

apps/store/src/components/Combobox/Combobox.tsx

@@ -81,7 +81,7 @@ export const Combobox = <Item,>({
     },
     inputValue,
     onInputValueChange({ inputValue: internalInputValue, selectedItem }) {
-      setInputValue(internalInputValue ?? '')
+      setInputValue(internalInputValue)
 
       // Set selectedItem to 'null' when clearing the input with delete/backspace
       // shorturl.at/f0158

yarn.lock

@@ -15203,9 +15203,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"downshift@npm:8.5.0":
-  version: 8.5.0
-  resolution: "downshift@npm:8.5.0"
+"downshift@npm:9.0.0":
+  version: 9.0.0
+  resolution: "downshift@npm:9.0.0"
   dependencies:
     "@babel/runtime": "npm:^7.22.15"
     compute-scroll-into-view: "npm:^3.0.3"
@@ -15214,7 +15214,7 @@ __metadata:
     tslib: "npm:^2.6.2"
   peerDependencies:
     react: ">=16.12.0"
-  checksum: 10c0/f572affe0884d6fb6523352fcb230db42875b557d972a74d15ef8a1b72702733bb5f329911d2810f9880e4b8ba1c6b6e10eb4bf6d8160ab4975c1e65c42c6da2
+  checksum: 10c0/2d13edeea83f8e3e332e28dd3096521bdf022045d6235d58df23c58d5905c2f414672aee3342498ec134294bd4c35b98cdefb2fa0393e1c1ff7939c59f05d779
   languageName: node
   linkType: hard
 
@@ -24987,7 +24987,7 @@ __metadata:
     cookies-next: "npm:4.1.1"
     date-fns: "npm:3.6.0"
     dotenv: "npm:16.4.5"
-    downshift: "npm:8.5.0"
+    downshift: "npm:9.0.0"
     eslint: "npm:8.57.0"
     eslint-config-custom: "workspace:"
     eslint-config-next: "npm:14.1.4"