Update name censor to check for certain substrings (#3603)

## Description:

The deduper was converting profane words like "kkk" => "k" and then
censoring all usernames with the letter "k", so instead we just hardcode
and check for substrings for profane phrases like that.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

evan

src/server/Privilege.ts

@@ -84,7 +84,9 @@ export function createMatcher(bannedWords: string[]): RegExpMatcher {
   });
   return {
     hasMatch: (input: string) =>
-      substringMatcher.hasMatch(input) || collapseMatcher.hasMatch(input),
+      input.toLowerCase().includes("kkk") ||
+      substringMatcher.hasMatch(input) ||
+      collapseMatcher.hasMatch(input),
     getAllMatches: (input: string, sorted?: boolean) => [
       ...substringMatcher.getAllMatches(input, sorted),
       ...collapseMatcher.getAllMatches(input, sorted),
@@ -118,7 +120,9 @@ function censorUsernameWithMatcher(
     ? username.replace(`[${clanTag}]`, "").trim()
     : username;
 
-  const clanTagIsProfane = clanTag ? matcher.hasMatch(clanTag) : false;
+  const clanTagIsProfane = clanTag
+    ? matcher.hasMatch(clanTag) || clanTag.toLowerCase() === "ss"
+    : false;
   const usernameIsProfane = matcher.hasMatch(nameWithoutClan);
 
   const censoredName = usernameIsProfane