Add support for JSX in stuff we import in Cypress test code (#8738)

* Add support for JSX in stuff we import in Cypress test code

Spawning from:

 - https://github.com/matrix-org/matrix-react-sdk/pull/8354#discussion_r883260722
 - https://github.com/matrix-org/matrix-react-sdk/pull/8354#discussion_r878660677

* Add problem import

* Inherit from existing type definitions

See https://github.com/matrix-org/matrix-react-sdk/pull/8738#discussion_r887350469

* Specify `commonjs`

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Remove `mxSettingsStore` as it's no longer needed

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

Co-authored-by: Šimon Brandner <simon.bra.ag@gmail.com>

cypress/tsconfig.json

@@ -1,9 +1,19 @@
 {
     "compilerOptions": {
         "target": "es2016",
-        "lib": ["es2020", "dom"],
+        "jsx": "react",
+        "lib": [
+            "es2020",
+            "dom",
+            "dom.iterable"
+        ],
         "types": ["cypress", "@percy/cypress"],
-        "moduleResolution": "node"
+        "resolveJsonModule": true,
+        "esModuleInterop": true,
+        "moduleResolution": "node",
+        "module": "commonjs"
     },
-    "include": ["**/*.ts"]
+    "include": [
+        "**/*.ts"
+    ]
 }