fix: skip rendering empty token text

Author: aminya

lib/mixins/canvas-drawer.js

@@ -514,6 +514,7 @@ function drawLines (firstRow, lastRow, offsetRow, lineHeight, charHeight, charWi
     const numTokenToRender = Math.min(numToken, maxTokensInOneLine)
     for (let iToken = 0; iToken < numTokenToRender; iToken++) {
       const token = editorTokensForScreenRow[iToken]
+      if (token.text === '') { continue }
       const tokenText = token.text.replace(invisibleRegExp, ' ')
       const tokenScopes = token.scopes