Revert "Disable automatic window tabbing (cherry-pick #26600) (#26652)" (#26749)

This reverts commit 391eb380b5.

For some reason that is very unclear to me, this broke ssh'ing into
macOS remotes.
The remote process aborts with:

```
-------------------------------------
Translated Report (Full Report Below)
-------------------------------------

Process:               zed-remote-server-dev-build [78088]
Path:                  /Users/USER/*/zed-remote-server-dev-build
Identifier:            zed-remote-server-dev-build
Version:               ???
Code Type:             ARM-64 (Native)
Parent Process:        launchd [1]
Responsible:           iTerm2 [62245]
User ID:               501

Date/Time:             2025-03-13 19:30:37.6827 -0600
OS Version:            macOS 15.3.1 (24D70)
Report Version:        12
Anonymous UUID:        3A9631EB-5468-8CA4-7A0F-E36C3FF9D04F

Sleep/Wake UUID:       C935AE4C-E06A-4F6D-BE97-101E4E03482F

Time Awake Since Boot: 910000 seconds
Time Since Wake:       1265 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000

Termination Reason:    Namespace OBJC, Code 1 

Application Specific Information:
crashed on child side of fork pre-exec


Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	       0x18653fc6c __abort_with_payload + 8
1   libsystem_kernel.dylib        	       0x186565eb8 abort_with_payload_wrapper_internal + 104
2   libsystem_kernel.dylib        	       0x186565e50 abort_with_reason + 32
3   libobjc.A.dylib               	       0x1861dc040 _objc_fatalv(unsigned long long, unsigned long long, char const*, char*) + 128
4   libobjc.A.dylib               	       0x1861dbfc0 _objc_fatal(char const*, ...) + 44
5   libobjc.A.dylib               	       0x1861c1674 performForkChildInitialize(objc_class*, objc_class*) + 400
6   libobjc.A.dylib               	       0x1861a67f0 initializeNonMetaClass + 592
7   libobjc.A.dylib               	       0x1861c4a3c initializeAndMaybeRelock(objc_class*, objc_object*, locker_mixin<lockdebug::lock_mixin<objc_lock_base_t>>&, bool) + 164
8   libobjc.A.dylib               	       0x1861a5f98 lookUpImpOrForward + 304
9   libobjc.A.dylib               	       0x1861a5b84 _objc_msgSend_uncached + 68
10  zed-remote-server-dev-build   	       0x104f9ec4c _$LT$$LP$$RP$$u20$as$u20$objc..message..MessageArguments$GT$::invoke::hf68c58806f4b5702 + 56
11  zed-remote-server-dev-build   	       0x104f9d4c8 objc::message::platform::send_unverified::h2ec8392957fd6551 + 120
12  zed-remote-server-dev-build   	       0x104e5631c cocoa::appkit::NSPasteboard::generalPasteboard::h68122d7f32549cba + 512
13  zed-remote-server-dev-build   	       0x104e3b3b4 gpui::platform::mac::platform::MacPlatform:🆕:hb68d7ae2c5fdea7e + 336
14  zed-remote-server-dev-build   	       0x104e48008 gpui::platform::current_platform::h931999673c8c6468 + 28
15  zed-remote-server-dev-build   	       0x104ee4284 gpui::app::Application::headless::h3bffec62c65240ce + 32
16  zed-remote-server-dev-build   	       0x1023746ac remote_server::unix::execute_run::h7ac8de1a7e257f61 + 1200
17  zed-remote-server-dev-build   	       0x102368e1c remote_server::main::h42e4b18462b32dcf + 252 (main.rs:56)
18  zed-remote-server-dev-build   	       0x10236717c core::ops::function::FnOnce::call_once::h8534244cea12c898 + 16 (function.rs:250)
19  zed-remote-server-dev-build   	       0x102368154 std::sys::backtrace::__rust_begin_short_backtrace::h22fd48e0f46eb10b + 12 (backtrace.rs:152)
20  zed-remote-server-dev-build   	       0x10236bf74 std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::hf8bd0081bf8d785b + 16 (rt.rs:195)
21  zed-remote-server-dev-build   	       0x105723d20 std::rt::lang_start_internal::h5f91760815528aa2 + 1092
22  zed-remote-server-dev-build   	       0x10236bf50 std::rt::lang_start::hb88fe48ac1498ea6 + 60 (rt.rs:194)
23  zed-remote-server-dev-build   	       0x10236b67c main + 36
24  dyld                          	       0x1861f4274 start + 2840
```

Which is not even (apparently) on the line that calls this function.

To reproduce this, run `ZED_BUILD_REMOTE_SERVER=true cargo run
ssh://127.0.0.1/~/`.

Release Notes:

- N/A

crates/gpui/src/platform/mac/window.rs

@@ -92,8 +92,6 @@ extern "C" {
 
 #[ctor]
 unsafe fn build_classes() {
-    let _: () = msg_send![class!(NSWindow), setAllowsAutomaticWindowTabbing: NO];
-
     WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow));
     PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel));
     VIEW_CLASS = {