fix eslint autofix for mui ThemeProvider

Signed-off-by: Juan Pablo Garcia Ripa <sarabadu@gmail.com>

.changeset/sixty-cherries-lie.md

@@ -0,0 +1,5 @@
+---
+'@backstage/eslint-plugin': patch
+---
+
+eslint autofix for mui ThemeProvider

.github/vale/config/vocabularies/Backstage/accept.txt

@@ -16,6 +16,7 @@ api
 asciidoc
 async
 Atlassian
+autofix
 automations
 autoscaling
 Autoscaling

packages/eslint-plugin/rules/no-top-level-material-ui-4-imports.js

@@ -23,6 +23,7 @@ const KNOWN_STYLES = [
   'styled',
   'useTheme',
   'Theme',
+  'ThemeProvider',
 ];
 
 /** @type {import('eslint').Rule.RuleModule} */

packages/eslint-plugin/src/no-top-level-material-ui-4-imports.test.ts

@@ -57,6 +57,11 @@ import Typography from '@material-ui/core/Typography';`,
       errors: [{ messageId: 'topLevelImport' }],
       output: `import Box from '@material-ui/core/Box';`,
     },
+    {
+      code: `import { ThemeProvider } from '@material-ui/core';`,
+      errors: [{ messageId: 'topLevelImport' }],
+      output: `import { ThemeProvider } from '@material-ui/core/styles';`,
+    },
     {
       code: `import {
                   Box,
@@ -65,6 +70,7 @@ import Typography from '@material-ui/core/Typography';`,
                   DialogTitle,
                   Grid,
                   makeStyles,
+                  ThemeProvider,
                 } from '@material-ui/core';`,
       errors: [{ messageId: 'topLevelImport' }],
       output: `import Box from '@material-ui/core/Box';
@@ -72,7 +78,7 @@ import DialogActions from '@material-ui/core/DialogActions';
 import DialogContent from '@material-ui/core/DialogContent';
 import DialogTitle from '@material-ui/core/DialogTitle';
 import Grid from '@material-ui/core/Grid';
-import { makeStyles } from '@material-ui/core/styles';`,
+import { makeStyles, ThemeProvider } from '@material-ui/core/styles';`,
     },
     {
       code: `import { Box, Button, makeStyles } from '@material-ui/core';`,