Fix Theme import for newer Typescript module resolution modes (#3101)

Author: kyvong

.changeset/light-seals-judge.md

@@ -0,0 +1,5 @@
+---
+'@emotion/react': patch
+---
+
+Fix Theme import for newer Typescript module resolution modes

packages/react/types/css-prop.d.ts

@@ -1,6 +1,6 @@
 import {} from 'react'
 import { Interpolation } from '@emotion/serialize'
-import { Theme } from '.'
+import { Theme } from '@emotion/react'
 
 declare module 'react' {
   interface Attributes {

packages/react/types/jsx-namespace.d.ts

@@ -1,6 +1,6 @@
 import 'react'
 import { Interpolation } from '@emotion/serialize'
-import { Theme } from './index'
+import { Theme } from '@emotion/react'
 
 type WithConditionalCSSProp<P> = 'className' extends keyof P
   ? string extends P['className' & keyof P]