Fix search operators sometimes getting lost (#35190)

spec/lib/search_query_transformer_spec.rb

@@ -129,4 +129,24 @@ RSpec.describe SearchQueryTransformer do
       end
     end
   end
+
+  context 'with multiple prefix clauses before a search term' do
+    let(:query) { 'from:me has:media foo' }
+
+    it 'transforms clauses' do
+      expect(subject.send(:must_clauses).map(&:term)).to contain_exactly('foo')
+      expect(subject.send(:must_not_clauses)).to be_empty
+      expect(subject.send(:filter_clauses).map(&:prefix)).to contain_exactly('from', 'has')
+    end
+  end
+
+  context 'with a search term between two prefix clauses' do
+    let(:query) { 'from:me foo has:media' }
+
+    it 'transforms clauses' do
+      expect(subject.send(:must_clauses).map(&:term)).to contain_exactly('foo')
+      expect(subject.send(:must_not_clauses)).to be_empty
+      expect(subject.send(:filter_clauses).map(&:prefix)).to contain_exactly('from', 'has')
+    end
+  end
 end