Add .lean, .lean4, and .hs as editable/viewable file types (#31716)

GitOrigin-RevId: c3ee7592d0a1096ac96ca9514579c559d028b840

services/web/.storybook/preview.tsx

@@ -74,6 +74,9 @@ function resetMeta() {
       'gv',
       'mf',
       'lhs',
+      'lean',
+      'lean4',
+      'hs',
       'mk',
       'xmpdata',
       'cfg',

services/web/config/settings.defaults.js

@@ -60,6 +60,9 @@ const defaultTextExtensions = [
   'yml',
   'yaml',
   'lhs',
+  'lean',
+  'lean4',
+  'hs',
   'mk',
   'xmpdata',
   'cfg',

services/web/test/frontend/helpers/reset-meta.ts

@@ -44,6 +44,9 @@ export function resetMeta() {
       'gv',
       'mf',
       'lhs',
+      'lean',
+      'lean4',
+      'hs',
       'mk',
       'xmpdata',
       'cfg',

services/web/test/unit/src/History/RestoreManager.test.mjs

@@ -129,6 +129,9 @@ describe('RestoreManager', function () {
           'yml',
           'yaml',
           'lhs',
+          'lean',
+          'lean4',
+          'hs',
           'mk',
           'xmpdata',
           'cfg',

services/web/test/unit/src/Uploads/FileTypeManager.test.mjs

@@ -138,6 +138,9 @@ describe('FileTypeManager', function () {
         '/something/file.m',
         '/file.TEX',
         '/file.lhs',
+        '/file.lean',
+        '/file.lean4',
+        '/file.hs',
         '/file.xmpdata',
         '/file.cfg',
         '/file.Rnw',