ModuleNotFoundError: No module named 'ldm' (webui regional prompter)

```
*** Error loading script: attention.py
Traceback (most recent call last):
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\modules\scripts.py", line 525, in load_scripts
script_module = script_loading.load_module(scriptfile.path)
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\modules\script_loading.py", line 13, in load_module
module_spec.loader.exec_module(module)
File "", line 883, in exec_module
File "", line 241, in _call_with_frames_removed
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\extensions\sd-webui-regional-prompter\scripts\attention.py", line 3, in
import ldm.modules.attention as atm
ModuleNotFoundError: No module named 'ldm'

---
*** Error loading script: latent.py
Traceback (most recent call last):
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\modules\scripts.py", line 525, in load_scripts
script_module = script_loading.load_module(scriptfile.path)
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\modules\script_loading.py", line 13, in load_module
module_spec.loader.exec_module(module)
File "", line 883, in exec_module
File "", line 241, in _call_with_frames_removed
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\extensions\sd-webui-regional-prompter\scripts\latent.py", line 11, in
import scripts.attention as att
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\extensions\sd-webui-regional-prompter\scripts\attention.py", line 3, in
import ldm.modules.attention as atm
ModuleNotFoundError: No module named 'ldm'

---
*** Error loading script: rp.py
Traceback (most recent call last):
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\modules\scripts.py", line 525, in load_scripts
script_module = script_loading.load_module(scriptfile.path)
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\modules\script_loading.py", line 13, in load_module
module_spec.loader.exec_module(module)
File "", line 883, in exec_module
File "", line 241, in _call_with_frames_removed
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\extensions\sd-webui-regional-prompter\scripts\rp.py", line 15, in
import scripts.attention
File "C:\Users\ZeroCool22\Desktop\webui_forge\webui\extensions\sd-webui-regional-prompter\scripts\attention.py", line 3, in
import ldm.modules.attention as atm
ModuleNotFoundError: No module named 'ldm'

---
```

https://github.com/hako-mikan/sd-webui-regional-prompter

Who need to make it compatible to works with the new Forge, the autor of the extension or you?

Thx.

Reproduce the failure while loading the sd-webui-regional-prompter extension, then inspect scripts/attention.py, scripts/latent.py, and scripts/rp.py alongside Forge's modules/scripts.py and modules/script_loading.py. Done means the extension scripts load without the reported ModuleNotFoundError in the new Forge environment.

Written by the indexing model from the issue text.