Set minimum size for end path icon

[RailKill]

Super simple, one-line fix for #14. Bug was caused by size.y = 0 in MonologueGraphNode _common_update() which is supposed to shrink y content, but the end path node icon does not have a minimum size, so it shrinks to 0. The fix is to set a minimum size, that's it.

[sourcery-ai]

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[sourcery-ai]

Hey @RailKill - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[atomic-junky]

Nice !