feat(start-os): open an action result's link in a new tab

[MattDHill]

Closes #3218.

An action that returns a URL could only be copied — switch tab, paste, enter. For a link that points back at the same server, that is a detour around a browser the user already has open.

What changed

ActionResultValue::Single gains launchable. When it is set, the action-result modal puts an open-in-new-tab button beside the value, using the same @tui.external-link icon the service controls use for "Open UI". It renders as an <a target="_blank" rel="noreferrer">, so Angular's URL sanitizer covers the value; the SDK docs state the value must be an http(s) URL.

Both renderers get it: action-success-single (a bare single result) and action-success-member (a single inside a group).

Optionality

copyable, qr and masked were required. Adding launchable as a fourth required flag would mean editing every package in the fleet, so it is optional — and the three it sits beside are now optional too, defaulting to false. Existing packages are unaffected: they already send all three.

Notes

• The generated bindings here are a hand-written prediction of what make start-core-ts-bindings emits — the regen does not fit on the machine this was written on. The Generated Artifacts gate is the check; if it drifts, the run's artifact replaces them.
• Conflicts textually with Multi-line action result values #3866, which adds a multiline variant carrying the same three flags. The conflict is textual only — launchable is for single, where the value is a URL, and does not belong on multiline.

Verified: npm run check, ng build ui (AOT, so the templates typecheck), container-runtime tsc --noEmit, make start-core-format-check.