fix(which/windows): ignore file extension case (#10102)

* fix(which/windows): ignore file extension case

* feat(which): add test for `endsWithExtension` fun

* Revert "feat(which): add test for `endsWithExtension` fun"

This reverts commit fb3ad51.

* add test

---------

Co-authored-by: Georgijs <48869301+gvilums@users.noreply.github.com>

src/which.zig

@@ -79,7 +79,7 @@ pub fn endsWithExtension(str: []const u8) bool {
     const file_ext = str[str.len - 3 ..];
     inline for (win_extensions) |ext| {
         comptime bun.assert(ext.len == 3);
-        if (bun.strings.eqlComptimeCheckLenWithType(u8, file_ext, ext, false)) return true;
+        if (bun.strings.eqlCaseInsensitiveASCIIICheckLength(file_ext, ext)) return true;
     }
     return false;
 }

test/js/bun/util/which.test.ts

@@ -33,6 +33,7 @@ if (isWindows) {
   test("which", () => {
     expect(which("cmd")).toBe("C:\\Windows\\system32\\cmd.exe");
     expect(which("cmd.exe")).toBe("C:\\Windows\\system32\\cmd.exe");
+    expect(which("cmd.EXE")).toBe("C:\\Windows\\system32\\cmd.EXE");
     expect(which("cmd.bat")).toBe(null);
     const exe = basename(process.execPath);
     const dir = join(process.execPath, "../");