fix: FQCN rules after PHP-CS-Fixer updates

[stickeepaul]

After some recent updates to PHP CS Fixer we noticed changes happening that we don't want like:

- @return \App\Carbon
+ @return Carbon

so this PR updates the baseline rules to revert back to what we had before.

Specifics

'global_namespace_import' => [
    'import_classes' => false,
    'import_constants' => false,
    'import_functions' => false
],

tells the global_namespace_import rule not to import global namespaced classes.

'fully_qualified_strict_types' => [
    'import_symbols' => true,
    'phpdoc_tags' => [
        // 'param',
        'phpstan-param',
        'phpstan-property',
        'phpstan-property-read',
        'phpstan-property-write',
        'phpstan-return',
        'phpstan-var',
        'property',
        'property-read',
        'property-write',
        'psalm-param',
        'psalm-property',
        'psalm-property-read',
        'psalm-property-write',
        'psalm-return',
        'psalm-var',
        // 'return',
        // 'see',
        // 'throws',
        // 'var'
    ]
],

tells the fully_qualified_strict_types rule to prefer importing namespaces except for the PHPDoc tags that have been commented out.

This means that we can have:

use App\Example; // imported namespace for class that is actually used in the file

/**
* Example
*
* @return \App\Example // FQCN in docblock for class that is not necessarily used in the file
*/
public function method(Example $example): Example // has had namespace imported so can be the short version

[stickeepaul]

this PR resulted in some incorrect changes to Nova resources:

+ use App\Models\Example; // imported but now no longer used
+
class Example extends Resource
{
/**
    * The model the resource corresponds to.
    *
    * @var string
    */
- public static string $model = ExampleModel::class;
+ public static string $model = self::class // wrong Example class