Fix missing Emphasis infotext

[Haoming02]

Description

• Simple Description: Currently, in certain situations (see Repro), the Emphasis parameter would be missing from the infotext
• Summary of Changes: Moved the code that adds this parameter into create_infotext function

Repro

0. Enable Persistent cond cache in settings
1. Generate an image that contains emphasis
   • notice the Emphasis: ... in infotext
2. Generate again with the exact same parameters (Seed can vary)
   • notice the Emphasis: ... is now missing
3. Reload UI
4. Click the Read generation parameters button (↙️)
5. See the Override settings now shows up as a result

• TL;DR: Currently, the Emphasis parameter is added during CLIP processing. So if you enable the Persistent cond cache, the CLIP no longer gets called in subsequent generations, thus missing the parameter.

Checklist

• I have read contributing wiki page
• I have performed a self-review of my own code
• My code follows the style guidelines
• My code passes tests

[w-e-w]

I also notice the issue with the entirer sd_hijack_clip.py
I have a WIP that I haven't had time to finish

• fix missing infotext cased by conds cache #16677