SSR drops property bindings that domino doesn't reflect, like [popover], [inert] or [max] on <meter> #71603

Which @angular/* package(s) are the source of the bug?

platform-server

Is this a regression?

No

Description

During SSR, a property binding ends up as el[name] = value on the domino element. When domino doesn't define that
property, the value is stored as a plain JavaScript property and never reaches the HTML. The browser shows that HTML
until hydration, and content in @defer (hydrate never) keeps it for good.

<button popovertarget="tip">Info</button>
<div id="tip" [popover]="'auto'">Popover content</div>

<fieldset [inert]="true">
  <input placeholder="Locked" />
</fieldset>

<meter [max]="100" [value]="42"></meter>

Server output:

<button popovertarget="tip">Info</button>
<div id="tip">Popover content</div>

<fieldset>
  <input placeholder="Locked" />
</fieldset>

<meter value="42"></meter>

So until the app hydrates, the popover content shows up inline and the button doesn't open it, the fieldset accepts
input, and the meter is drawn full (42 against the default max of 1).

To see how far this goes, I compared every property in the compiler's DOM schema with what domino defines, and kept
the ones Chrome reflects to an attribute. Leaving out obsolete elements, the main ones are:

• all elements: popover, inert, autofocus, autocapitalize, inputMode (domino defines autoFocus and
  autoCapitalize, so the standard names don't match)
• img: decoding
• video: playsInline, disablePictureInPicture, and disableRemotePlayback on media elements
• button and input: popoverTargetAction; input: formAction
• meter: min, max, low, high, optimum
• td and th: headers

A few others are lost too, like contentEditable, slot, part and token lists such as relList.

#71470 adds command, name on details, autocorrect, webkitdirectory and rel on form to the schema, and they
hit the same problem. It leaves fetchPriority out for this reason: a priority hint that only arrives after hydration
is too late.

While looking at this, I also found that button, fieldset, label, meter, object, output and progress
share a single property object in domino's htmlelts.js. Each of them inherits the reflected attributes of the ones
defined before it, so fieldset.type returns "submit" and progress has formAction and data.

I opened angular/domino#54, which fixes all of the above. With it, the server output of the template above has
popover="auto", inert="" and max="100".

Please provide a link to a minimal reproduction of the bug

There's no StackBlitz since this is about the server output. In any SSR app, add the template above and look at the
page source, or call renderApplication() with it.

Please provide the exception or error you saw

No error with an AOT build: the attributes are just missing from the server HTML.

Please provide the environment you discovered this bug in (run ng version)

Angular: 22.2.3 (@angular/platform-server bundles domino 1929b1e, same as main)
Node: 24.21.0

Anything else?

This is the same kind of problem as #69785, which was fixed in angular/domino#34. Once the domino version is bumped
here, fetchPriority on img and link could be added to the schema.