Fix context selector not showing execution contexts

When execution context's origin is `file://` - the `url.domain()` is an
empty string and the item's subtitle becomes falsy. Since we predicated
rendering of an item on presence of both title and subtitle - the items
were not rendered while still taking space in the dropdown.

Bug: 502830845
Change-Id: I17bfb26edafbc7471f782c953205fe1a49349943
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/7761316
Commit-Queue: Samiya Caur <samiyac@chromium.org>
Reviewed-by: Danil Somsikov <dsv@chromium.org>
Reviewed-by: Samiya Caur <samiyac@chromium.org>

Author: indutny-signal

AUTHORS

@@ -41,6 +41,7 @@ Emir D <emrd434@gmail.com>
 Ergün Erdoğmuş <erdogmusergun@gmail.com>
 Eric Rannaud <eric.rannaud@gmail.com>
 Faisal Salman <fyzlman@gmail.com>
+Fedor Indutny <indutny@signal.org>
 Feng Lu <lufengd3@gmail.com>
 Feng Yu <f3n67u@gmail.com>
 Gabriel Luong <gabriel.luong@gmail.com>

front_end/panels/console/ConsoleContextSelector.ts

@@ -303,7 +303,7 @@ interface ViewInput {
 type View = (input: ViewInput, output: undefined, target: HTMLElement) => void;
 
 const DEFAULT_VIEW: View = (input, _output, target): void => {
-  if (!input.title || !input.subtitle) {
+  if (!input.title) {
     render(nothing, target);
     return;
   }