create-next-app: fix font file corruption when using import alias (#69806)
There's code that uses `glob` to find all template files and replaces
the default import alias with whatever is specified during CNA. This
does so without excluding fonts, and so we're unintentionally corrupting
these `woff` files.
This wasn't a problem in previous versions because we didn't use
`localFont` in the default template, just `Inter`. The files were
technically still being corrupted it just never manifested unless you
went to actually use them.
This is a quick fix to introduce minimal changes but ideally in a
follow-up we should figure out a better solution for replacing aliases,
ie by using an allowlist rather than an exclude list.
h/t to @lubieowoce for the thorough test cases
Fixes #69748
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Co-authored-by: Janka Uryga <lolzatu2@gmail.com>