Fix: Skip JIT warmup when fusion is disabled via arguments

[kisseternity]

What does this PR do ?

This PR adds conditional checks to _warmup_jit_function in initialize.py to ensure JIT fusions (Bias+GeLU/SwiGLU and Bias+Dropout+Add) are only warmed up when they are enabled via arguments (e.g., checks args.bias_gelu_fusion, args.bias_dropout_fusion). This prevents unnecessary warmup execution when users explicitly disable these fusions using flags like --no-bias-gelu-fusion.

Pre-checks

• [done ] I want this PR in a versioned release and have added the appropriate Milestone (e.g., Core 0.8)
• [done ] I have added relevant unit tests
• [done ] I have added relevant functional tests
• [done ] I have added proper typing to my code Typing guidelines
• [done ] I have added relevant documentation
• [done ] I have run the autoformatter.sh on my PR

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