Also do so in various other test classes.
Follows-up 170c49d61c. Fixes Travis CI regression:
> 1) MediaWiki\Tests\Revision\MutableRevisionRecordTest::testSetGetPageId
> Failed asserting that 2 is identical to 0.
> tests/phpunit/includes/Revision/MutableRevisionRecordTest.php:129
Change-Id: I41c8bda8e620ebe7608a393d81f3b0f13af68ba7
When submiting using the 'go' feature of Special:Search (standard
usecase for autocomplete) a nearby title can be selected.
Unfortunately a fragment only title is considered valid, which
sends the user to Main_Page#searchterm.
Instead don't allow a search starting with # to trigger the go
feature.
Bug: T182452
Change-Id: I8ce3ce8633e23db41ae6eafb9996ca7294f8445a