MDL-80727 tool_task: replace hard-coded adhoc task runner strings.

admin/tool/task/lang/en/tool_task.php

@@ -80,6 +80,9 @@ $string['runnow'] = 'Run now';
 $string['runagain'] = 'Run again';
 $string['runadhoc_confirm'] = 'Tasks will run on the web server and may take some time to complete.';
 $string['runadhoc'] = 'Run ad hoc tasks now?';
+$string['runadhoctask'] = 'Run \'{$a->task}\' task ID {$a->taskid}';
+$string['runadhoctasks'] = 'Run all \'{$a}\' tasks';
+$string['runadhoctasksfailed'] = 'Run failed \'{$a}\' tasks';
 $string['runnow_confirm'] = 'Are you sure you want to run this task \'{$a}\' now? The task will run on the web server and may take some time to complete.';
 $string['runclassname'] = 'Run all';
 $string['runclassnamefailedonly'] = 'Run all failed';

admin/tool/task/run_adhoctasks.php

@@ -54,13 +54,19 @@ if ($taskid) {
         throw new \moodle_exception('invalidtaskid');
     }
     $classname = $record->classname;
-    $heading = "Run $classname task Id $taskid";
+    $heading = get_string('runadhoctask', 'tool_task', ['task' => $classname, 'taskid' => $taskid]);
     $tasks = [core\task\manager::adhoc_task_from_record($record)];
 } else {
     if (!$classname) {
         throw new \moodle_exception('noclassname', 'tool_task');
     }
-    $heading = "Run " . s($classname) . " " . ($failedonly ? "failed" : "all")." tasks";
+
+    $heading = get_string(
+        $failedonly ? 'runadhoctasksfailed' : 'runadhoctasks',
+        'tool_task',
+        s($classname),
+    );
+
     $now = time();
     $tasks = array_filter(
         core\task\manager::get_adhoc_tasks($classname, $failedonly, true),