[BUGFIX] #private field access in class-based components

[NullVoxPopuli]

I forgot to follow up on this since the e2e / scenario tests have been added.

I noticed this wasn't working in my REPL, which (at the time of writing), is on 7.1.0-alpha.2

https://limber.glimdown.com/edit?c=JYWwDg9gTgLgBAYQuCA7Apq%2BAzKy4DkAAgOYA2oI6UA9AMbKQZYEDcAUO%2BgB6SxwATdNgCGAVzLw6ZEQGdZcABLoyZCAHVoZAXB4xMAhUhTN4Ab3Zw4AYmwQIcALyEAFirVwYbqOjaW4-gA8%2BuAy%2BgB8-lZmZl7AsgB0tvYAvilBNCFgYeiR6UA&format=gjs

Fixes: #21007

[github-actions]

📊 Size report

Tarball size — 1.2 MB → 1.2 MB

dist/dev   No changes

File	Before (Size / Brotli)	After (Size / Brotli)
Total (Includes all files)	2.1 MB / 477.3 kB	2.1 MB / 477.3 kB

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dist/prod   No changes

File	Before (Size / Brotli)	After (Size / Brotli)
Total (Includes all files)	1.9 MB / 436.8 kB	1.9 MB / 436.8 kB

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smoke-tests/v2-app-hello-world-template/dist   No changes

File	Before (Size / Brotli)	After (Size / Brotli)
Total (Includes all files)	251.6 kB / 68.8 kB	251.6 kB / 68.8 kB

_{🤖 This report was automatically generated by wyvox/pkg-size}