Get app menus basically working

- Everything is still disabled when there is no active window.

Co-Authored-By: Marshall <marshall@zed.dev>

crates/editor2/src/display_map/block_map.rs

@@ -993,7 +993,7 @@ mod tests {
     use super::*;
     use crate::display_map::inlay_map::InlayMap;
     use crate::display_map::{fold_map::FoldMap, tab_map::TabMap, wrap_map::WrapMap};
-    use gpui::{div, font, px, Element, Platform as _};
+    use gpui::{div, font, px, Element};
     use multi_buffer::MultiBuffer;
     use rand::prelude::*;
     use settings::SettingsStore;
@@ -1185,11 +1185,7 @@ mod tests {
     fn test_blocks_on_wrapped_lines(cx: &mut gpui::TestAppContext) {
         cx.update(|cx| init_test(cx));
 
-        let font_id = cx
-            .test_platform
-            .text_system()
-            .font_id(&font("Helvetica"))
-            .unwrap();
+        let font_id = cx.text_system().font_id(&font("Helvetica")).unwrap();
 
         let text = "one two three\nfour five six\nseven eight";
 

crates/editor2/src/display_map/wrap_map.rs

@@ -1032,7 +1032,7 @@ mod tests {
         display_map::{fold_map::FoldMap, inlay_map::InlayMap, tab_map::TabMap},
         MultiBuffer,
     };
-    use gpui::{font, px, test::observe, Platform};
+    use gpui::{font, px, test::observe};
     use rand::prelude::*;
     use settings::SettingsStore;
     use smol::stream::StreamExt;

crates/editor2/src/editor_tests.rs

@@ -12,7 +12,7 @@ use futures::StreamExt;
 use gpui::{
     div,
     serde_json::{self, json},
-    Div, Flatten, Platform, TestAppContext, VisualTestContext, WindowBounds, WindowOptions,
+    Div, Flatten, TestAppContext, VisualTestContext, WindowBounds, WindowOptions,
 };
 use indoc::indoc;
 use language::{
@@ -3238,9 +3238,7 @@ async fn test_clipboard(cx: &mut gpui::TestAppContext) {
         the lazy dog"});
     cx.update_editor(|e, cx| e.copy(&Copy, cx));
     assert_eq!(
-        cx.test_platform
-            .read_from_clipboard()
-            .map(|item| item.text().to_owned()),
+        cx.read_from_clipboard().map(|item| item.text().to_owned()),
         Some("fox jumps over\n".to_owned())
     );