Allow resizing search filter in search job

Allow qBt to resize the search filter in search job because it causes
qBt's width to exceed the screen's width for laptop users.

src/gui/search/searchjobwidget.cpp

@@ -129,7 +129,6 @@ SearchJobWidget::SearchJobWidget(SearchHandler *searchHandler, QWidget *parent)
     updateFilter();
 
     m_lineEditSearchResultsFilter = new LineEdit(this);
-    m_lineEditSearchResultsFilter->setFixedWidth(Utils::Gui::scaledSize(this, 170));
     m_lineEditSearchResultsFilter->setPlaceholderText(tr("Filter search results..."));
     m_lineEditSearchResultsFilter->setContextMenuPolicy(Qt::CustomContextMenu);
     connect(m_lineEditSearchResultsFilter, &QWidget::customContextMenuRequested, this, &SearchJobWidget::showFilterContextMenu);