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">


if (
      typeof PDFJSDev === "undefined" ||
      PDFJSDev.test("!PRODUCTION || TESTING")
    ) {
      assert(
        this._defaultAppearanceData,
        "Expected `_defaultAppearanceData` to have been set."
      );
    }
    const {
      localResources,
      appearanceResources,
      acroFormResources,
    } = this._fieldResources;
    const fontNameStr =
      this._defaultAppearanceData && this._defaultAppearanceData.fontName.name;
    if (!fontNameStr) {
      return localResources || Dict.empty;
    }
    for (const resources of [localResources, appearanceResources]) {
      if (resources instanceof Dict) {
        const localFont = resources.get("Font");
        if (localFont instanceof Dict && localFont.has(fontNameStr)) {
          return resources;
        }