i18n(pl): translate the strings that landed beside the Polish catalog

The Polish catalog (#1192) and the Camera Raw window, Open in Camera Raw
and System Title Bar changes merged around the same time, so pl.tsv
missed four strings and three i18n tests failed on main.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01UHgFEHEsefoQoBParH47JA

crates/ui-egui/src/i18n/pl.tsv

@@ -3178,3 +3178,7 @@ cameraRaw	Roughness	Chropowatość
 	% of all commits	% wszystkich commitów
 	Lines +/−	Wiersze +/−
 	@{login}: {prs} PRs, {commits} commits, +{added} / −{deleted} lines (Δ {delta}), +{binAdded} / −{binDeleted} binary assets, {first} – {last}	@{login}: PR: {prs}, commity: {commits}, wiersze +{added} / −{deleted} (Δ {delta}), pliki binarne +{binAdded} / −{binDeleted}, {first} – {last}
+	Camera Raw ({name})	Camera Raw ({name})
+	Developing {name}	Wywoływanie {name}
+	Open in camera raw	Otwieraj w Camera Raw
+	System title bar	Systemowy pasek tytułu