Correct way to allow setting context with existing

This reverts commit 5c4d3eeffd.

Original solution has introduced special workaround (strict flag) which
contradicts the concept of immutable context. Moreover, it introduces
possible side-effects, because child process will use the one set by
parent instead of having own one.

The correct solution is to re-create context in process entry point

Sorry, it was Jan 1 and I was drunk :(

tests/ahriman/core/repository/test_repository.py

@@ -32,11 +32,11 @@ def test_set_context(configuration: Configuration, database: SQLite, mocker: Moc
 
     instance = Repository.load("x86_64", configuration, database, report=False, unsafe=False)
     set_mock.assert_has_calls([
-        MockCall(ContextKey("database", SQLite), instance.database, strict=False),
-        MockCall(ContextKey("configuration", Configuration), instance.configuration, strict=False),
-        MockCall(ContextKey("pacman", Pacman), instance.pacman, strict=False),
-        MockCall(ContextKey("sign", GPG), instance.sign, strict=False),
-        MockCall(ContextKey("repository", Repository), instance, strict=False),
+        MockCall(ContextKey("database", SQLite), instance.database),
+        MockCall(ContextKey("configuration", Configuration), instance.configuration),
+        MockCall(ContextKey("pacman", Pacman), instance.pacman),
+        MockCall(ContextKey("sign", GPG), instance.sign),
+        MockCall(ContextKey("repository", Repository), instance),
     ])
 
 

tests/ahriman/core/test_context_init.py

@@ -57,17 +57,6 @@ def test_set_value_exception() -> None:
         ctx.set(ContextKey("key", str), 42)
 
 
-def test_set_value_exists() -> None:
-    """
-    must skip key set in case if key already exists and strict check is disabled
-    """
-    key, value = ContextKey("key", int), 42
-    ctx = _Context()
-    ctx.set(key, value)
-
-    ctx.set(key, value, strict=False)
-
-
 def test_contains() -> None:
     """
     must correctly check if element is in list