Import glm4_lce_forward locally in function (#695)

## Summary
<!--- This is a required section; please describe the main purpose of
this proposed code change. --->
Import glm4_lce_forward locally in function to fix compatibility and
tests with older transformers version.

<!---
## Details
This is an optional section; is there anything specific that reviewers
should be aware of?
--->

## Testing Done
<!--- This is a required section; please describe how this change was
tested. --->

<!-- 
Replace BLANK with your device type. For example, A100-80G-PCIe

Complete the following tasks before sending your PR, and replace `[ ]`
with
`[x]` to indicate you have done them. 
-->

- Hardware Type: <BLANK>
- [x] run `make test` to ensure correctness
- [x] run `make checkstyle` to ensure code style
- [x] run `make test-convergence` to ensure convergence

Author: vaibhavjindal

src/liger_kernel/transformers/monkey_patch.py

@@ -17,7 +17,6 @@
 from liger_kernel.transformers.model.gemma import lce_forward_deprecated as gemma_lce_forward_deprecated
 from liger_kernel.transformers.model.gemma2 import lce_forward as gemma2_lce_forward
 from liger_kernel.transformers.model.gemma2 import lce_forward_deprecated as gemma2_lce_forward_deprected
-from liger_kernel.transformers.model.glm4 import lce_forward as glm4_lce_forward
 from liger_kernel.transformers.model.llama import lce_forward as llama_lce_forward
 from liger_kernel.transformers.model.llama import lce_forward_deprecated as llama_lce_forward_deprecated
 from liger_kernel.transformers.model.llava import lce_forward as llava_lce_forward
@@ -1350,6 +1349,8 @@ def apply_liger_kernel_to_glm4(
     from transformers.models.glm4 import modeling_glm4
     from transformers.models.glm4.modeling_glm4 import Glm4Model
 
+    from liger_kernel.transformers.model.glm4 import lce_forward as glm4_lce_forward
+
     if rope:
         raise NotImplementedError("liger_rotary_pos_emb is not available for Glm4 models.")
     if rms_norm: