Update all remaining first-party crates to Rust 2024 edition

Reviewed By: diliop

Differential Revision: D109924043

fbshipit-source-id: ba37b5be19c9c513220107617e8fc9f731561c40

Author: David Tolnay

eden/scm/lib/webview-app/BUCK

@@ -18,7 +18,6 @@ rust_library(
         },
     },
     crate_root = "src/lib.rs",
-    edition = "2021",
     deps = [
         "fbsource//third-party/rust:anyhow",
         "fbsource//third-party/rust:dirs",

eden/scm/lib/webview-app/Cargo.toml

@@ -11,7 +11,6 @@ license = "MIT"
 
 [lib]
 name = "webview_app"
-edition = "2021"
 
 [dependencies]
 anyhow = "1.0.102"