[typing] remove various decorators that we only used to hep basedpyright

ty solves this so much better

src/teilchensammler_cli/tui.py

@@ -1,5 +1,3 @@
-from typing import Literal, final, override
-
 from textual.app import ComposeResult
 from textual.containers import HorizontalGroup
 from textual.screen import Screen
@@ -7,7 +5,6 @@ from textual.widget import Widget
 from textual.widgets import DataTable, Footer, Header, Static, Input, Button
 
 
-@final
 class SearchBar(Static):
     DEFAULT_CSS = """
     #teilchen-input {
@@ -18,7 +15,6 @@ class SearchBar(Static):
     }
     """
 
-    @override
     def compose(self) -> ComposeResult:
         with HorizontalGroup(id="search-bar-widget"):
             yield Input(
@@ -60,9 +56,7 @@ FAKE_DATA: list[TeilchenHeader | TeilchenDatum] = [
 ]
 
 
-@final
 class SearchResults(Widget):
-    @override
     def compose(self) -> ComposeResult:
         yield DataTable(id="table-search-result", cursor_type="row", zebra_stripes=True)
 
@@ -73,7 +67,6 @@ class SearchResults(Widget):
 
 
 class AddInventoryScreen(Screen[None]):
-    @override
     def compose(self) -> ComposeResult:
         yield Header()
         yield SearchBar()