Normalize on pointer events since they should work for both mobile and desktop

[captbaritone]

Extra: Avoid selecting "text" when trying to tap double size mode clutter bar target

Test Plan

(Test on both iOS/Safari and Desktop/Chrome)

• While playing a track, drag position bar. See that it continues to move after the fact
• Drag balance, see that balance changes and marquee stops showing balance text after release
• Toggle double size mode, see that while touching it, the marquee shows info about double size mode
• Tapping shade mode playlist takes focus from other windows
• Playlist and Milkdrop windows can be resized by dragging handle
• Windows can be moved by dragging title bar

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[github-actions]

Size Change: -28 B (0%)

Total Size: 494 kB

Filename	Size	Change
./packages/webamp/built/webamp.bundle.min.js	316 kB	-12 B (0%)
./packages/webamp/built/webamp.lazy-bundle.min.js	179 kB	-16 B (0%)

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