Replace cargo-cranky with workspace lints (#4413)

Replace `cargo-cranky` (which has served us well) with workspace lints

crates/eframe/src/native/app_icon.rs

@@ -224,6 +224,7 @@ fn set_title_and_icon_mac(title: &str, icon_data: Option<&IconData>) -> AppIconS
         static NSApp: Option<&'static NSApplication>;
     }
 
+    // SAFETY: we don't do anything dangerous here
     unsafe {
         let Some(app) = NSApp else {
             log::debug!("NSApp is null");

crates/eframe/src/native/glow_integration.rs

@@ -5,7 +5,11 @@
 //! There is a bunch of improvements we could do,
 //! like removing a bunch of `unwraps`.
 
-#![allow(clippy::arc_with_non_send_sync)] // glow::Context was accidentally non-Sync in glow 0.13, but that will be fixed in future releases of glow: https://github.com/grovesNL/glow/commit/c4a5f7151b9b4bbb380faa06ec27415235d1bf7e
+// `clippy::arc_with_non_send_sync`: `glow::Context` was accidentally non-Sync in glow 0.13,
+// but that will be fixed in future releases of glow.
+// https://github.com/grovesNL/glow/commit/c4a5f7151b9b4bbb380faa06ec27415235d1bf7e
+#![allow(clippy::arc_with_non_send_sync)]
+#![allow(clippy::undocumented_unsafe_blocks)]
 
 use std::{cell::RefCell, num::NonZeroU32, rc::Rc, sync::Arc, time::Instant};
 

crates/eframe/src/web/text_agent.rs

@@ -119,7 +119,7 @@ pub fn install_text_agent(runner_ref: &WebRunner) -> Result<(), JsValue> {
 }
 
 /// Focus or blur text agent to toggle mobile keyboard.
-pub fn update_text_agent(runner: &mut AppRunner) -> Option<()> {
+pub fn update_text_agent(runner: &AppRunner) -> Option<()> {
     use web_sys::HtmlInputElement;
     let window = web_sys::window()?;
     let document = window.document()?;