### What does this PR do?
Enables async stack traces
### How did you verify your code works?
Added tests
---------
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
### What does this PR do?
Removes `ZigString.Slice.clone(...)` and replaces all of its usages with
`.cloneIfNeeded(...)` which is what it did anyway (why did this alias
exist in the first place?)
Anyone reading code that sees `.clone(...)` would expect it to clone the
underlying string. This makes it _extremely_ easy to write code which
looks okay but actually results in a use-after-free:
```zig
const out: []const u8 = out: {
const string = bun.String.cloneUTF8("hello friends!");
defer string.deref();
const utf8_slice = string.toUTF8(bun.default_allocator);
defer utf8_slice.deinit();
// doesn't actually clone
const cloned = utf8_slice.clone(bun.default_allocator) catch bun.outOfMemory();
break :out cloned.slice();
};
std.debug.print("Use after free: {s}!\n", .{out});
```
(This is a simplification of an actual example from the codebase)
