fix suggestions performance (#1008)

**Required**:

Task/Issue URL:
https://app.asana.com/0/1201048563534612/1208413716679959/f
iOS PR: duckduckgo/iOS#3405
macOS PR: duckduckgo/macos-browser#3353
What kind of version bump will this require?: Major/Minor/Patch

**Optional**:

Tech Design URL:
CC:

**Description**:
Fix suggestions performance issue by just looking at the first 100
sorted local results.

**Steps to test this PR**:
1. Run the app on a local large data source (history entries > 1000
entries ideally)
1. Use autocomplete and check that it doesn't time out for a broad range
of matches

Sources/Suggestions/SuggestionProcessing.swift

@@ -58,7 +58,8 @@ final class SuggestionProcessing {
         }
 
         // Get best matches from history and bookmarks
-        let allLocalSuggestions = localSuggestions(from: history, bookmarks: bookmarks, internalPages: internalPages, openTabs: openTabs, query: query)
+        let allLocalSuggestions = Array(localSuggestions(from: history, bookmarks: bookmarks, internalPages: internalPages, openTabs: openTabs, query: query)
+            .prefix(100)) // temporary optimsiation
 
         // Combine HaB and domains into navigational suggestions and remove duplicates
         let navigationalSuggestions = allLocalSuggestions + duckDuckGoDomainSuggestions