Fix "autcomplete" typos in core

The test is failing because of changed spelling.

Testing Drupal\Tests\dblog\Functional\DbLogViewsTest
.F..........                                                      12 / 12 (100%)

Time: 3.4 minutes, Memory: 4.00 MB

There was 1 failure:

1) Drupal\Tests\dblog\Functional\DbLogViewsTest::testDbLog
DBLog event was recorded: [delete user]
Failed asserting that a boolean is not empty.

Should this test be fixed along with this issue? Because this seems to be out of scope to me.

We should open another issue to fix this.

Failure seems unrelated and I can't reproduce locally. Otherwise the patch looks good so marking RTBC and triggering a retest; the bot will set it back to needs work if it does fail again.

Quickfix. Looks good to commit. +1 for RTBC.

Edit: The patch needs backport to 8.x.

Now that #2972224: Add .cspell.json to automate spellchecking in Drupal core is in, we can make sure this spelling error never happens again by removing the entry from Drupal's dictionrary, so let's update the patch to include that. Thanks!

1. 'This looks good to me. I checked the dictionary and there are the following other related words:

   autocompletefocus
   autocompleteresponses
   autocompletesearch
   autocompleteselect
   autocompleting

   [ayrton:maintainer | Tue 06:59:36] $ grep -ri "\bautocompletefocus\b" * | grep -v "vendor" | grep -v "node_modules"
   core/misc/cspell/dictionary.txt:autocompletefocus
   core/misc/autocomplete.es6.js:   * Handles an autocompletefocus event.

   [ayrton:maintainer | Tue 07:01:34] $ grep -ri "\bautocompleteselect\b" * | grep -v "vendor" | grep -v "node_modules"
   core/misc/cspell/dictionary.txt:autocompleteselect
   core/misc/autocomplete.es6.js:   * Handles an autocompleteselect event.

   Both could probably be two words in the comment.

   Then these two actually have uses in code:

   core/misc/cspell/dictionary.txt:autocompleteresponses
   core/themes/claro/js/autocomplete.js:        $input.on('input autocompletesearch autocompleteresponses', function (event) {
   core/themes/claro/js/autocomplete.es6.js:          $input.on('input autocompletesearch autocompleteresponses', event => {

   So, that's a long-winded saying of "I think we need a followup for auto-complete run on names in JavaScript" which would need review by the frontend framework manager probably to explain. I'm tagging "Needs followup" for that, and reducing the scope of this issue to just the non-JS case.

2. The change in this patch is allowable because it is a fix to an internal variable name in a test that is not exposed publicly anywhere. If someone were to later use the correct spelling without us fixing this, that could introduce bugs.

Committed and pushed #12 to 9.1.x. Thanks!

Since 9.0.x and earlier do not have the dictionary, but these are test spelling bugs, we can backport the fixes themselves to 9.0/8.9. Fortunately we have a patch that does just that in #3, so I'm going to try using that patch for backport. Committed #3 to 9.0.x and cherry-picked it to 8.9.x. Thanks everyone!