Icon merge. (#725)
**Updated**
Arrow Collapse All / 20, 24 / Filled
**New**
Arrow Collapse All / 16 / Filled & Regular
Arrow Expand All / 16, 20, 24 / Filled & Regular
Chat Arrow Back Down / 16, 20, 24, 28, 32, 48 / Filled & Regular
Desktop Arrow Down / 32 / Filled & Regular
Edit Line Horizontal 3 / 20, 24 / Filled & Regular
Gift Open / 32 / Filled & Regular
Prompt / 16, 20, 24, 28, 32, 48 / Filled & Regular
Search Sparkle / 16, 20, 24, 28, 32, 48 / Filled & Regular
Slide Text Call / 16, 20, 24, 28, 48 / Filled & Regular
Slide Text Cursor / 20, 24 / Filled & Regular
Vehicle Motorcycle / 16, 20, 24, 28, 32, 48 / Filled & Regular
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