LCM text literal operator improperly escapes quotation marks in text

The LCM text literal operator produces invalid java code when quotation marks are present in the input, for example a text operator with the content " will produce the string literal """ in the generated Java, causing the LCM rule to fail evaluation.

This is caused by the quote_ method that escapes single quotation marks (') instead of double quotation marks ("):

    /**
    * Encode a string as a properly escaped Java string, complete with
    * quotes.
    * @param {string} string Text to encode.
    * @return {string} Java string.
    * @private
    */
    Blockly.Java.quote_ = function (s: string) {
      // TODO: This is a quick hack.  Replace with goog.string.quote
      s = s.replace(/\\/g, '\\\\')
        .replace(/\n/g, '\\\n')
        .replace(/'/g, '\\\'');
      return '"' + s + '"';
    };

Source