Add regression test for command preview corpus

Sources/ContentView.swift

@@ -3434,6 +3434,25 @@ struct ContentView: View {
         return Array(matches.prefix(resultLimit))
     }
 
+    nonisolated static func commandPaletteCommandPreviewMatchCommandIDsForTests(
+        searchCorpus: [CommandPaletteSearchCorpusEntry<String>],
+        candidateCommandIDs: [String],
+        searchCorpusByID: [String: CommandPaletteSearchCorpusEntry<String>],
+        query: String,
+        resultLimit: Int
+    ) -> [String] {
+        let preparedQuery = CommandPaletteFuzzyMatcher.preparedQuery(query)
+        return commandPalettePreviewSearchMatches(
+            candidateCommandIDs: candidateCommandIDs,
+            searchCorpusByID: searchCorpusByID,
+            query: query,
+            usageHistory: [:],
+            queryIsEmpty: preparedQuery.isEmpty,
+            historyTimestamp: 0,
+            resultLimit: resultLimit
+        ).map(\.commandID)
+    }
+
     private func scheduleCommandPaletteResultsRefresh(forceSearchCorpusRefresh: Bool = false) {
         refreshCommandPaletteSearchCorpus(force: forceSearchCorpusRefresh)