fix: export DateSeparator, TextButton tsx source files (#279)

To fix build

Author: sravan-s

exports.js

@@ -103,7 +103,7 @@ export default {
   'ui/Checkbox': 'src/ui/Checkbox/index.tsx',
   'ui/ConnectionStatus': 'src/ui/ConnectionStatus/index.tsx',
   'ui/ContextMenu': 'src/ui/ContextMenu/index.tsx',
-  'ui/DateSeparator': 'src/ui/DateSeparator/index.jsx',
+  'ui/DateSeparator': 'src/ui/DateSeparator/index.tsx',
   'ui/EmojiReactions': 'src/ui/EmojiReactions/index.tsx',
   'ui/FileMessageItemBody': 'src/ui/FileMessageItemBody/index.tsx',
   'ui/FileViewer': 'src/ui/FileViewer/index.tsx',
@@ -138,7 +138,7 @@ export default {
   'ui/ReactionBadge': 'src/ui/ReactionBadge/index.tsx',
   'ui/ReactionButton': 'src/ui/ReactionButton/index.tsx',
   'ui/SortByRow': 'src/ui/SortByRow/index.tsx',
-  'ui/TextButton': 'src/ui/TextButton/index.jsx',
+  'ui/TextButton': 'src/ui/TextButton/index.tsx',
   'ui/TextMessageItemBody': 'src/ui/TextMessageItemBody/index.tsx',
   'ui/ThumbnailMessageItemBody': 'src/ui/ThumbnailMessageItemBody/index.tsx',
   'ui/Tooltip': 'src/ui/Tooltip/index.tsx',