### What this PR does / why we need it? This PR simplifies the apply method in w8a8_dynamic.py by removing the conditional logic that used fused_w1_scale and fused_w2_scale based on the fused_scale_flag. This redundant wrap behavior leads to EPLB break in int8 quantization scenarios. Cherry-picked from #7188. Note that only bugfix lines in that PR are picked. Signed-off-by: linfeng-yuan <1102311262@qq.com>