Add React @types to Snap package (#280)

Declare this dependency explicitly, as it's currently necessary for the
JSX components to work proplerly.

The same deps are already in the site package and get hoisted, which
unintendedly makes everything work.

Co-authored-by: Frederik Bolding <frederik.bolding@gmail.com>

packages/snap/package.json

@@ -39,6 +39,8 @@
     "@metamask/eslint-config-typescript": "^12.1.0",
     "@metamask/snaps-cli": "^6.2.1",
     "@metamask/snaps-jest": "^8.2.0",
+    "@types/react": "18.2.4",
+    "@types/react-dom": "18.2.4",
     "@typescript-eslint/eslint-plugin": "^5.42.1",
     "@typescript-eslint/parser": "^5.42.1",
     "eslint": "^8.45.0",

yarn.lock

@@ -5024,6 +5024,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/react-dom@npm:18.2.4":
+  version: 18.2.4
+  resolution: "@types/react-dom@npm:18.2.4"
+  dependencies:
+    "@types/react": "*"
+  checksum: 8301f35cf1cbfec8c723e9477aecf87774e3c168bd457d353b23c45064737213d3e8008b067c6767b7b08e4f2b3823ee239242a6c225fc91e7f8725ef8734124
+  languageName: node
+  linkType: hard
+
 "@types/react-dom@npm:^18.0.0, @types/react-dom@npm:^18.0.6":
   version: 18.0.6
   resolution: "@types/react-dom@npm:18.0.6"
@@ -5044,6 +5053,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/react@npm:18.2.4":
+  version: 18.2.4
+  resolution: "@types/react@npm:18.2.4"
+  dependencies:
+    "@types/prop-types": "*"
+    "@types/scheduler": "*"
+    csstype: ^3.0.2
+  checksum: d920fc93832fe50d5e8175a0ba233086c97a9e238ff7327c8319b8dec57409618f491d6f71be2374c3132f40a8fc428b3e406c1e2a5f1dc32ccd6d47051786d2
+  languageName: node
+  linkType: hard
+
 "@types/responselike@npm:*, @types/responselike@npm:^1.0.0":
   version: 1.0.0
   resolution: "@types/responselike@npm:1.0.0"
@@ -16973,6 +16993,8 @@ __metadata:
     "@metamask/snaps-cli": ^6.2.1
     "@metamask/snaps-jest": ^8.2.0
     "@metamask/snaps-sdk": ^6.1.1
+    "@types/react": 18.2.4
+    "@types/react-dom": 18.2.4
     "@typescript-eslint/eslint-plugin": ^5.42.1
     "@typescript-eslint/parser": ^5.42.1
     buffer: ^6.0.3