Change default class labels to be more generic

Class names look like this:

 339 | Class PM8                         |
| 340 | Class PJG                         |
| 341 | Class P5K                         |
| 342 | Class OX8                         |
| 343 | Class OOW                         |
| 344 | Class OGK                         |
| 345 | Class NUC                         |
| 346 | Class NRK                         |
| 347 | Class NM0                         |
| 348 | Class NJ8                         |
| 349 | Class NGG                         |
| 350 | Class NDO                         |
| 351 | Class NAW                         |
| 352 | Class N84                         |
| 353 | Class N5C                         |
| 354 | Class N2K                         |
| 355 | Class M2G                         |
| 356 | Class LWW                         |
| 357 | Class L7W                         |
| 358 | Class L2C                         |
| 359 | Class KR8                         |
| 360 | Class KG4                         |
| 361 | Class K28                         |
| 362 | Class JZG                         |
| 363 | Class JWO                         |
| 364 | Class JOC                         |
| 365 | Class JLK                         |
| 366 | Class JIS                         |

Thanks, going to port this to 1.0.x.

While porting, got this:

There was 1 error:

1) Drupal\Tests\lms\FunctionalJavascript\GeneralLmsTest::testLms
TypeError: base_convert(): Argument #1 ($num) must be of type string, int given

/var/www/html/web/modules/contrib/lms/src/Hooks/EntityHooks.php:125
/var/www/html/web/modules/contrib/lms/tests/src/FunctionalJavascript/GeneralLmsTest.php:188
/var/www/html/web/modules/contrib/lms/tests/src/FunctionalJavascript/GeneralLmsTest.php:100

fixed with
'@class_name' => \strtoupper(\base_convert((string) ($course->id() + 100), 10, 36))

Automatically closed - issue fixed for 2 weeks with no activity.