Stack overflow in app_server if too many windows are tiled

[X512]

This is hrev53937.

Steps to reproduce:

1. Install Koder. Full path in window title is enabled.
2. Open haiku/headers/os/interface or some other folder with a lot of text files in Tracker.
3. Select all and open in Koder.
4. app_server will crash and after stack trace all screen are filled with TabDecorator::_DistributeTabSize(float) + 0x1a9.

[pulkomandy]

​https://review.haiku-os.org/c/haiku/+/2656 may help

[X512]

Now it freeze in TabDecorator::_DoTabLayout in event loop thread. Display is not refreshing, only cursor is moving.

[X512]

I managed to reproduce problem in test_app_server.

[X512]

I also get this while testing:

Assertion failed file ../src/kits/interface/RegionSupport.cpp, line 1113: top < bottom
Assertion failed file ../src/kits/interface/RegionSupport.cpp, line 1116: r->left < r->right
test_app_server: ../src/system/libroot/posix/malloc_hoard2/superblock.h:171:BPrivate::block* BPrivate::superblock::getBlock(): getNumAvailable() == 0

Crash was caused by malloc in BRegion.

[X512]

Proposed fix: ​https://review.haiku-os.org/c/haiku/+/2680.

[X512]

Small window with many tabs with ​https://review.haiku-os.org/c/haiku/+/2680 applied.

[X512]

Test application: ​https://github.com/X547/HaikuUtils/tree/master/TabbedWindows.

[X512]

While testing I sometimes get issue similar to #13070 and once I get monitor turn off when Koder windows are opening (why???).

[waddlesplash]

Merged in hrev54188.