fix(script): Default bin.name to package.name

The current behavior breaks from how implicit bins normally work when `package.name`
is set.
When it isn't set, they were using the same logic, so that should be
fine.

Author: epage

src/cargo/util/toml/mod.rs

@@ -379,10 +379,7 @@ fn normalize_toml(
             warnings,
         )?;
         let original_toml_bin = if is_embedded {
-            let manifest_file_stem = manifest_file
-                .file_stem()
-                .expect("file name enforced previously");
-            let name = embedded::sanitize_name(manifest_file_stem.to_string_lossy().as_ref());
+            let name = package_name.as_ref().to_owned();
             let manifest_file_name = manifest_file
                 .file_name()
                 .expect("file name enforced previously");

tests/testsuite/script/cargo.rs

@@ -724,17 +724,14 @@ fn test () {}
 
     p.cargo("-Zscript -v deps.rs")
         .masquerade_as_nightly_cargo(&["script"])
-        .with_stdout_data(str![[r#"
-current_exe: [ROOT]/home/.cargo/target/[HASH]/debug/deps-[EXE]
-arg0: [..]
-args: []
-
-"#]])
+        .with_status(101)
+        .with_stdout_data(str![""])
         .with_stderr_data(str![[r#"
 [WARNING] `package.edition` is unspecified, defaulting to `2024`
-[COMPILING] deps v0.0.0 ([ROOT]/foo/deps.rs)
-[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [ELAPSED]s
-[RUNNING] `[ROOT]/home/.cargo/target/[HASH]/debug/deps-[EXE]`
+[ERROR] failed to parse manifest at `[ROOT]/foo/deps.rs`
+
+Caused by:
+  the binary target name `deps` is forbidden, it conflicts with cargo's build directory names
 
 "#]])
         .run();