Do not focus the tag search line edit in the show event

This is a bad idea, since that will take focus away from the canvas
every time the krita window is shown anew.

BUG:404131

libs/widgets/KoResourceItemChooser.cpp

@@ -563,13 +563,6 @@ void KoResourceItemChooser::showEvent(QShowEvent *event)
 {
     QWidget::showEvent(event);
     updateView();
-
-    /* Give the search field focus onShowEvent to allow for
-     * faster preset filtering... */
-    if( d->tagManager ) {
-        d->tagManager->searchField()->setFocus(Qt::FocusReason::OtherFocusReason);
-        d->tagManager->searchField()->selectAll();
-    }
 }
 
 void KoResourceItemChooser::updateView()

libs/widgets/KoResourceTaggingManager.cpp

@@ -385,11 +385,6 @@ KoTagChooserWidget* KoResourceTaggingManager::tagChooserWidget()
     return d->tagChooser;
 }
 
-QLineEdit* KoResourceTaggingManager::searchField()
-{
-    return d->tagFilter->searchField();
-}
-
 KoTagFilterWidget* KoResourceTaggingManager::tagFilterWidget()
 {
     return d->tagFilter;

libs/widgets/KoResourceTaggingManager.h

@@ -58,10 +58,9 @@ public:
     bool allowTagModification();
     KoTagFilterWidget* tagFilterWidget();
     KoTagChooserWidget* tagChooserWidget();
-    class QLineEdit* searchField();
 
 Q_SIGNALS:
-    void updateView();
+    void    updateView();
     
 private Q_SLOTS:
 

libs/widgets/KoTagFilterWidget.cpp

@@ -127,11 +127,6 @@ void KoTagFilterWidget::clear()
     d->tagSearchSaveButton->setEnabled(false);
 }
 
-QLineEdit *KoTagFilterWidget::searchField()
-{
-    return d->tagSearchLineEdit;
-}
-
 void KoTagFilterWidget::onTextChanged(const QString& lineEditText)
 {
     d->tagSearchSaveButton->setEnabled(!lineEditText.isEmpty());

libs/widgets/KoTagFilterWidget.h

@@ -38,7 +38,6 @@ public:
     void allowSave(bool allow);
     void clear();
 
-    class QLineEdit* searchField();
 Q_SIGNALS:
     void filterTextChanged(const QString &filterText);
     void saveButtonClicked();