add setupRTS script and use it on jest config

jest.config.js

@@ -7,7 +7,7 @@ module.exports = {
     '^uniforms([^/]*)(.*)$': '<rootDir>/packages/uniforms$1/src$2',
   },
   preset: 'ts-jest',
-  setupFiles: ['./scripts/setupFilterWarnings.ts'],
+  setupFiles: ['./scripts/setupRTS.ts', './scripts/setupFilterWarnings.ts'],
   setupFilesAfterEnv: ['./scripts/setupMatchers.ts'],
   testEnvironment: 'jsdom',
   testPathIgnorePatterns: ['/node_modules/', '/_[^/]*$', '\\.d\\.ts$'],

scripts/setupRTS.ts

@@ -0,0 +1,13 @@
+Object.defineProperty(window, 'matchMedia', {
+  writable: true,
+  value: jest.fn().mockImplementation(query => ({
+    matches: false,
+    media: query,
+    onchange: null,
+    addEventListener: () => {},
+    addListener: () => {},
+    dispatchEvent: () => {},
+    removeEventListener: () => {},
+    removeListener: () => {},
+  })),
+});