Attach (recommended) or Link to PDF file here:
https://drive.google.com/open?id=1UjLxnFw2g3gn3tvNLRYLdmG6mFdFKCcr

Configuration:
- Web browser and its version: Chrome 77.0.3865.90
- Operating system and its version: Mac mojave 10.14.6
- PDF.js version: 2.3.194
- Is a browser extension: Nope

Steps to reproduce the problem:
1. Make sure to set `renderInteractiveForms` to `true`
2. The read-only form field(Sample title) doesn't honor it's proper font-size

What is the expected behavior?
<img width="862" alt="write" src="https://user-images.githubusercontent.com/4616548/66152094-4a009a80-e64b-11e9-81dc-178068055efa.png">

What went wrong?
<img width="842" alt="wrong" src="https://user-images.githubusercontent.com/4616548/66152100-4d942180-e64b-11e9-91a8-ad9caf451f98.png">


}
    } else {
      element = document.createElement("div");
      element.textContent = this.data.fieldValue;
      element.style.verticalAlign = "middle";
      element.style.display = "table-cell";
      let font = null;
      if (
        this.data.fontRefName &&
        this.page.commonObjs.has(this.data.fontRefName)
      ) {
        font = this.page.commonObjs.get(this.data.fontRefName);
      }
      this._setTextStyle(element, font);
    }
    if (this.data.textAlignment !== null) {
      element.style.textAlign = TEXT_ALIGNMENT[this.data.textAlignment];
    }
    this.container.appendChild(element);
    return this.container;
  }
  /**
   * Apply text styles to the text in the element.
   *
   * @private
   * @param {HTMLDivElement} element
   * @param {Object} font
   * @memberof TextWidgetAnnotationElement
   */
  _setTextStyle(element, font) {