Query Builder pluck() does not work with column name with space

[shadoWalker89]

• Laravel Version: 6.12.0
• PHP Version: 7.2.14
• Database Driver & Version: Mysql 5.6.31

Description:

When using the query builder to pluck some column with a space an error will occur.
For exemple

NoteRow::pluck('Identifiant groupe');

Will give this error

ErrorException : Undefined property: stdClass::$groupe`
 W:\projects\exam-laravel\src\exam-laravel\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php:2330
 W:\projects\exam-laravel\src\exam-laravel\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php:2302
 W:\projects\exam-laravel\src\exam-laravel\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.php:687

I found the source of the bug in this method stripTableForPluck() of the query builder

framework/src/Illuminate/Database/Query/Builder.php

Line 2313 in fc844ce

return is_null($column) ? $column : last(preg_split('~\.| ~', $column));

As you can see to remove the table name from the column the method is splitting by dot or space and then take the last item.
I know that the regex should check for space not within `` because that is used to allow for having column names with space but i do not know how to update the regex.