[BUG] &nbsp (without semicolon) is treated as an entity.

[mkucharski17]

Describe the bug:
&nbsp should be treated as normal text. I tried other entities without semicolon eg &larr or &rarr and they work properly.

HTML to reproduce the issue:
<p>Let's &rarr; &larr; &nbsp; try this!</p><p>Let's &rarr &larr &nbsp try this!</p>

Html widget configuration:

         Html(
              data: "<p>Let's &rarr; &larr; &nbsp; try this!</p>"
                  "<p>Let's &rarr &larr &nbsp try this!</p>",
              style: {
                'p': Style(margin: Margins.all(0)),
              },
            ),

Expected behavior:
&nbsp should be treated as normal text.

Screenshots:

Device details and Flutter/Dart/flutter_html versions:

Flutter 3.22.2 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 761747bfc5 (3 miesiące temu) • 2024-06-05 22:15:13 +0200
Engine • revision edd8546116
Tools • Dart 3.4.3 • DevTools 2.34.3