Fixed #31912 -- Removed strict=True in Path.resolve() in project template and CommonPasswordValidator.

This caused permission errors when user didn't have permissions to
all intermediate directories in a Django installation path.

Thanks tytusd and leonyxz for reports.

Regression in edeec1247e and
26554cf5d1.

docs/howto/overriding-templates.txt

@@ -29,7 +29,7 @@ called ``blog``, which provides the templates ``blog/post.html`` and
 
     from pathlib import Path
 
-    BASE_DIR = Path(__file__).resolve(strict=True).parent.parent
+    BASE_DIR = Path(__file__).resolve().parent.parent
 
     INSTALLED_APPS = [
         ...,