Update GUI control to be forgiving of text resizeToFit layout calculations (#16997)

Control.ts expects less than 3 layouts to occur but textBlock.ts will
layout 3 times when resizeToFit is true -- this is because isDirty is
set to true causing a recreation of fontOffset (even if font offset has
the proper height) and thus fontOffset.height is getting recalculated to
the old value We should fix the logic so that fontOffset retains the
updated height value. Until then, upping the layout cycle detection
error threshold

Relayout 1: NewHeight 106, InternalHeight 187 --> updates internal
height to be new height unnecessarily since the internalheight is valid
Relayout 2: NewHeight 187, InternalHeight 106 
Relayout 3: Both 187 --> exit loop (but at this point we're already at
3)
<img width="236" height="39" alt="image"
src="https://github.com/user-attachments/assets/2e2508c5-377e-42d1-be79-0a3d15d50529"
/>

See
https://forum.babylonjs.com/t/jumping-text-with-resizetofit-false/59949
for more details

---------

Co-authored-by: Georgina <[email protected]>

Author: georginahalpern

packages/dev/gui/src/2D/controls/control.ts

@@ -1923,9 +1923,9 @@ export class Control implements IAnimatable, IFocusableControl {
                 this._rebuildLayout = false;
                 this._processMeasures(parentMeasure, context);
                 rebuildCount++;
-            } while (this._rebuildLayout && rebuildCount < 3);
+            } while (this._rebuildLayout && rebuildCount < 4);
 
-            if (rebuildCount >= 3) {
+            if (rebuildCount >= 4) {
                 Logger.Error(`Layout cycle detected in GUI (Control name=${this.name}, uniqueId=${this.uniqueId})`);
             }