Set to browser.py finddupes.ui remember the last search text

https://anki.tenderapp.com/discussions/ankidesktop/39468-find-and-replace-does-not-remember-the-input-from-last-time

qt/aqt/browser.py

@@ -2013,6 +2013,8 @@ update cards set usn=?, mod=?, did=? where id in """
         frm = aqt.forms.finddupes.Ui_Dialog()
         frm.setupUi(d)
         restoreGeom(d, "findDupes")
+        searchHistory = setupComboBoxHistory(frm.search, "findDupesFind")
+
         fields = sorted(
             anki.find.fieldNames(self.col, downcase=False), key=lambda x: x.lower()
         )
@@ -2030,10 +2032,9 @@ update cards set usn=?, mod=?, did=? where id in """
         qconnect(d.finished, onFin)
 
         def onClick():
+            search_text = saveComboBoxHistory(frm.search, searchHistory, "findDupesFind")
             field = fields[frm.fields.currentIndex()]
-            self.duplicatesReport(
-                frm.webView, field, frm.search.text(), frm, web_context
-            )
+            self.duplicatesReport(frm.webView, field, search_text, frm, web_context)
 
         search = frm.buttonBox.addButton(_("Search"), QDialogButtonBox.ActionRole)
         qconnect(search.clicked, onClick)

qt/designer/finddupes.ui

@@ -34,7 +34,20 @@
       </widget>
      </item>
      <item row="2" column="2" colspan="2">
-      <widget class="QLineEdit" name="search"/>
+      <widget class="QComboBox" name="search">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+         <horstretch>9</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="editable">
+        <bool>true</bool>
+       </property>
+       <property name="insertPolicy">
+        <enum>QComboBox::NoInsert</enum>
+       </property>
+      </widget>
      </item>
     </layout>
    </item>