Steps to reproduce:
1. Create a new Unity project
2. In the Hierarchy, create any GameObject
3. Open the Animation window (Window -> Animation -> Animation)
4. With the GameObject selected, click "Create" in the Animation window
5. Click "Add Property" and add “Cube : Position” Property
6. Select “Curve” tab
7. Right-click on red Curve Key and select “Edit Key”
8. Add “22222222222222222222222222” in “value” field
9. Press Enter
10. Observe Curve and Console window 

Actual results: Adding a bigger value causes Curve to disappear, unable to re-add it in the Curves window, errors are thrown in the Console window
Expected results: Value field should be limited how big of a value can be added, should not break the Curves, no errors thrown in the Console window

Reproducible with versions: 6000.0.65f1, 6000.3.4f1, 6000.4.0b3, 6000.5.0a4

Tested on (OS): macOS Silicon Tahoe 26.2

Errors:
{code:java}
Mesh 'ControlPointRendererMesh': abnormal mesh bounds - most likely it has some invalid vertices (+/-inifinity or NANs) due to errors exporting.
Mesh bounds min=(33.00, -155555563602465356559417344.00, 0.00), max=(49.00, -155555563602465356559417344.00, 0.00). Please make sure the mesh is exported without any errors.
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)
{code}