focus the toggle button on locale-change without the need to track th…

…at element.

we have full control over this component's markup, so let's traverse it
to markup from the click target to the toggle button,
instead of tracking the toggle button separately.
one less modifier.

packages/frontend/.lint-todo

@@ -98,3 +98,4 @@ add|ember-template-lint|no-at-ember-render-modifiers|10|6|10|6|d919d2af254f782c0
 add|ember-template-lint|no-at-ember-render-modifiers|11|6|11|6|940005188b476a060b0e5d3f05baea24ba178878|1719360000000|1734915600000|1750464000000|app/components/reports/subject/new/session-type.hbs
 add|ember-template-lint|no-at-ember-render-modifiers|10|6|10|6|d919d2af254f782c01fe2ba15416673e52e91124|1719360000000|1734915600000|1750464000000|app/components/reports/subject/new/term.hbs
 add|ember-template-lint|no-at-ember-render-modifiers|11|6|11|6|940005188b476a060b0e5d3f05baea24ba178878|1719360000000|1734915600000|1750464000000|app/components/reports/subject/new/term.hbs
+remove|ember-template-lint|no-at-ember-render-modifiers|16|4|16|4|46d995f60904f6b6f4b1b6b24bb65b9c97441bc1|1719360000000|1734915600000|1750464000000|app/components/locale-chooser.hbs

packages/frontend/tests/integration/components/locale-chooser-test.js

@@ -57,8 +57,10 @@ module('Integration | Component | locale-chooser', function (hooks) {
     await render(hbs`<LocaleChooser />`);
 
     await component.toggle.click();
+    assert.notOk(component.toggle.hasFocus);
     await component.locales[1].click();
     assert.strictEqual(component.locales.length, 0);
     assert.strictEqual(component.text, 'Español (es)');
+    assert.ok(component.toggle.hasFocus);
   });
 });

packages/frontend/tests/pages/components/locale-chooser.js

@@ -1,12 +1,13 @@
 import { create, collection, triggerable } from 'ember-cli-page-object';
-
+import { hasFocus } from 'ilios-common';
 export default create({
   scope: '[data-test-locale-chooser]',
   toggle: {
     scope: '[data-test-toggle]',
     enter: triggerable('keyup', '', { eventProperties: { key: 'Enter' } }),
     down: triggerable('keyup', '', { eventProperties: { key: 'ArrowDown' } }),
     esc: triggerable('keyup', '', { eventProperties: { key: 'Escape' } }),
+    hasFocus: hasFocus(),
   },
   locales: collection('[data-test-item]', {}),
 });