Fix integration tests by fixing a PHP 8.1+ deprecation warnings in ReflectionClass (#1351)

* gha: get more insights when/if logs exist

* Better handle cases when we can receive a concrete instance

The problem with `null` being passed to `ReflectionClass` was always
there but in PHP 8.1+ it triggers a deprecation warnings.

Since having `null` in `$concrete` doesn't make sense to reflect
anything anyway, we just throw a custom exception (which gets caught a
couple lines below) and just carry on.

When using `-v` this can be seen, example:
```
$ ./artisan ide-helper:meta -v
Cannot make 'Faker\Generator': Class 'Faker\Provider\en_US\Barcode' not found.
Cannot make 'Illuminate\Contracts\Auth\Authenticatable': Class  does not exist
Cannot make 'cache.psr6': Class 'Symfony\Component\Cache\Adapter\Psr16Adapter' not found.
Cannot make 'csp-nonce': Class 'Wza3Mf4CXIvCkcp9K3boMUGJoK6S9maO' not found.
Cannot make 'env': Class 'local' not found.
Cannot make 'filesystem.cloud': Disk [s3] does not have a configured driver.
Cannot make 'redis.connection': Redis connection [default] not configured.
A new meta file was written to .phpstorm.meta.php
```

* gha: make sure to run meta with -v to see all output

Helps when debugging things

* Add CHANGELOG.md entry

.github/workflows/run-integration-tests.yml

@@ -57,16 +57,22 @@ jobs:
             - name: Execute meta run
               run: |
                   cd sample
-                  php artisan ide-helper:meta
+                  php artisan ide-helper:meta -v
 
             - name: Check file existence
               run: |
                 ls sample/_ide_helper.php
                 ls sample/.phpstorm.meta.php
 
-            - name: Check file count in logs
+            - name: Check logs
               run: |
-                if [ `ls -1q "sample/storage/logs/" | wc -l` -gt 0 ];then exit 1;fi
+                if [ `ls -1q "sample/storage/logs/" | wc -l` -gt 0 ]; then
+                  for logfile in sample/storage/logs/*; do
+                    echo "-- $logfile --"
+                    cat $logfile
+                  done
+                  exit 1
+                fi
 
     php-laravel-integration-tests:
         runs-on: ubuntu-20.04
@@ -115,13 +121,20 @@ jobs:
             - name: Execute meta run
               run: |
                   cd sample
-                  php artisan ide-helper:meta
+                  php artisan ide-helper:meta -v
 
             - name: Check file existence
               run: |
                 ls sample/_ide_helper.php
                 ls sample/.phpstorm.meta.php
 
-            - name: Check file count in logs
+
+            - name: Check logs
               run: |
-                if [ `ls -1q "sample/storage/logs/" | wc -l` -gt 0 ];then exit 1;fi
+                if [ `ls -1q "sample/storage/logs/" | wc -l` -gt 0 ]; then
+                  for logfile in sample/storage/logs/*; do
+                    echo "-- $logfile --"
+                    cat $logfile
+                  done
+                  exit 1
+                fi