RFR: 8353440: Disable FTP fallback for non-local file URLs by default

[Eirik Bjørsnøs]

On Wed, 23 Apr 2025 11:01:48 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

> There are no handlers for URIs - only for URLs - so I would replace URI with URL in the property description to avoid any confusion.

I just realized I had initially put this under the Proxies section. That does not make much sense, so I've extracted it to a separate H2 section as it does not seem to fit any existing section.

The Proxy section curiusly seems to use **URI** everywhere, but I've changed to using **URL** for this new section. It's a bit weird now that RFC 8089 uses URI, but maybe it's too hard to be consistent **and** correct in this case?

<img width="627" alt="image" src="https://github.com/user-attachments/assets/6de8da6c-8ba4-4858-9033-eef641235689" />

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PR Comment: https://git.openjdk.org/jdk/pull/24657#issuecomment-2824135824