Carry the learned denoise's switch and grain as edit settings

Whether to use the learned denoise, and how much grain to keep, are what a
photographer sets, so they travel the one road every setting does: published
as a capability, captured by Preset, stored in the sidecar, replayed by the
undo stack (FR-DEV-3c). Published only on a photograph that can take it, for
the lens switch's reason; the availability is derived from the file and is
not in the state. Off by default, grain 0; a reset returns both.

ui/dr-ui/src/labels.rs

@@ -203,6 +203,7 @@ fn catalogued(key: &str) -> Option<&'static str> {
         // it is a tick box, and a checkbox labelled with a verb reads as a
         // button that does something once rather than a state that is on.
         "op.lens_profile" => "Lens Profile",
+        "op.learned_denoise" => "AI Denoise",
         // The view transform (FR-DEV-3j). "Tone Mapping" rather than the
         // "View Transform" `derive` would give: the id names where it sits in
         // the pipeline, and the photographer is choosing how the scene's range
@@ -218,6 +219,8 @@ fn catalogued(key: &str) -> Option<&'static str> {
         // parameter is titled by its operation and this one never reaches the
         // panel under its own name — see `rows_filtered`.
         "param.lens_profile.apply" => "Apply",
+        "param.learned_denoise.apply" => "Apply",
+        "param.learned_denoise.grain" => "Keep grain",
         "param.camera_profile.apply" => "Use Profile",
         // The LookTable's strength, as Lightroom's profile "Amount".
         "param.camera_profile.look" => "Look Amount",