UX: Skip applying link-type watched words to user custom fields (#20465)

We currently apply type: :link watched words to custom user fields. This makes the user card pretty ugly because we don't allow html / links there. Additionally, the admin UI also does not say that we apply this to custom user fields, but only words in posts.

So this PR is to remove the replacement of link-type watch words for custom user fields.

app/services/word_watcher.rb

@@ -132,18 +132,18 @@ class WordWatcher
 
   def self.replace_text(text)
     return text if text.blank?
+    replace(text, :replace)
+  end
 
-    %i[replace link]
-      .flat_map { |type| word_matcher_regexps(type).to_a }
-      .reduce(text) do |t, (word_regexp, attrs)|
-        case_flag = attrs[:case_sensitive] ? nil : Regexp::IGNORECASE
-        replace_text_with_regexp(t, Regexp.new(word_regexp, case_flag), attrs[:replacement])
-      end
+  def self.replace_link(text)
+    return text if text.blank?
+    replace(text, :link)
   end
 
   def self.apply_to_text(text)
     text = censor_text(text)
     text = replace_text(text)
+    text = replace_link(text)
     text
   end
 
@@ -246,4 +246,15 @@ class WordWatcher
   end
 
   private_class_method :censor_text_with_regexp
+
+  private
+
+  def self.replace(text, watch_word_type)
+    word_matcher_regexps(watch_word_type)
+      .to_a
+      .reduce(text) do |t, (word_regexp, attrs)|
+        case_flag = attrs[:case_sensitive] ? nil : Regexp::IGNORECASE
+        replace_text_with_regexp(t, Regexp.new(word_regexp, case_flag), attrs[:replacement])
+      end
+  end
 end