Add cleaner list of classes allowed to be extended

rules/phpstan-rules.neon

@@ -3,7 +3,6 @@ includes:
     - ../../../vendor/phpstan/phpstan-deprecation-rules/rules.neon
 parameters:
     ignoreErrors:
-        - '#Class (MDMysqliInvalidInput|MDMysqliExpectedError|MDExpectedException|MDgenericInvalidInputsException) is neither abstract nor final.#'
         - '#Method MDMysqli::_check_query_efficiency\(\) is unused.#'
         - '# with null as default value.#'
     polluteScopeWithLoopInitialAssignments: false
@@ -18,7 +17,19 @@ parameters:
     reportStaticMethodSignatures: true
     ergebnis:
         allowAbstractClasses: true
-        classesNotRequiredToBeAbstractOrFinal: []
+        classesNotRequiredToBeAbstractOrFinal:
+            - mysqli
+            - mysqli_stmt
+            - Exception
+            - MDGenericWriter
+            - MDGenericObject
+            - XMLParser
+            - LidoParser
+            - MDValueSet
+            - MDMysqliInvalidInput
+            - MDMysqliExpectedError
+            - MDgenericInvalidInputsException
+            - MDExpectedException
         interfacesImplementedByContainers:
             - Psr\Container\ContainerInterface
         classesAllowedToBeExtended: