Error when changing texture while building compute list

### Tested versions

- Reproducible in: v4.5.beta7.mono.official [4ebf67c12]

### System information

Godot v4.5.beta7.mono - Windows 10 (build 19045) - Multi-window, 1 monitor - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1050 Ti (NVIDIA; 32.0.15.6094) - AMD Ryzen 7 1700 Eight-Core Processor (16 threads) - 31.95 GiB memory

### Issue description

Changing a curve of a curve texture in the inspector, while a compute list happens to be in the progress of being built, causes the error:
```
E 0:00:09:128 test_compute.gd:8 @ _process(): Updating textures is forbidden during creation of a draw or compute list
Condition "draw_list.active || compute_list.active" is true. Returning: ERR_INVALID_PARAMETER
servers/rendering/rendering_device.cpp:1571 @ texture_update()
test_compute.gd:8 @ _process()
```

### Steps to reproduce

A node with the following code will simulate a game that runs compute every frame:
```gdscript
func _process(delta: float) -> void:
var rd := RenderingServer.get_rendering_device()
var compute_list := rd.compute_list_begin()
for i in 1000000: ## mimic a long command list
pass
rd.compute_list_end()
```
If you run the game in the editor, and change a curve texture on a Sprite2D (maybe other textures too, but I keep this narrow), chances are that it will try to update the curve texture after rd.compute_list_begin() and before rd.compute_list_end(). That will produce an error, and fail to update the texture.

Uneducated suggestions:
- Only update textures between frames.
- Or maybe check if there currently is an active compute or draw list, and have a more graceful response than just throwing an error and failing to update the texture.

### Minimal reproduction project (MRP)

[mrp-change-texture-during-compute.zip](https://github.com/user-attachments/files/22240579/mrp-change-texture-during-compute.zip)

Reproduce the issue with the linked minimal reproduction project and the test_compute.gd loop. Start at servers/rendering/rendering_device.cpp:1571 and trace the texture update path alongside compute_list_begin() and compute_list_end(). Done means changing the curve texture during compute-list construction no longer fails to update it, though the issue does not specify the intended synchronization behavior.

Written by the indexing model from the issue text.