CSS classes are ignored if they start with e then number
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#### Summary:
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So I have a magical SVG from my school.
When I preview it in my browser, it has a white font. When I open it in Inkscape v0.92, it has a white font.
However, when I try to open it in Inkscape v1.2, it has a black font.
#### Steps to reproduce:
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- open Inkscape
- open the file
#### What happened?
The SVG has a black font.
#### What should have happened?
The SVG has a white font.
Sample attachments:
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[SVG file here.](https://github.com/zhtluo/purdue-slide-template/blob/main/logo/cs-rev.svg)
#### Version info
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```
Inkscape 1.2.1 (0f2f062aeb, 2022-09-21, custom)
GLib version: 2.72.1
GTK version: 3.24.33
glibmm version: 2.66.2
gtkmm version: 3.24.5
libxml2 version: 2.9.13
libxslt version: 1.1.34
Cairo version: 1.16.0
Pango version: 1.50.6
HarfBuzz version: 2.7.4
OS version: Ubuntu Core 22
```
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issue