Improve SplitButton sample

[anicyne]

Refs: #7805

[github-actions]

Netlify Draft Deployment
URL: https://6878d05f041423fb336fbc4c--kolibri-public-ui.netlify.app
Logs: https://app.netlify.com/projects/kolibri-public-ui/deploys/6878d05f041423fb336fbc4c

[github-actions]

Hydration Benchmark Report (vs Baseline)

✅ Top 5 Improvements (Best Speedups)

Component	Current	Baseline	Δ%	Result
kol-form	28.6ms	35.6ms	-19.7%	✅
kol-skip-nav	19.8ms	23.6ms	-16.1%	✅
kol-input-color	70ms	81.9ms	-14.5%	✅
kol-input-radio	49.3ms	56.5ms	-12.7%	✅
kol-tabs	28.6ms	32.3ms	-11.5%	✅

🔻 Flop 5 Regressions (Worst Slowdowns)

Component	Current	Baseline	Δ%	Result
kol-drawer	43.6ms	25.6ms	+70.3%	🔻
kol-card	27.1ms	22.6ms	+19.9%	🔻
kol-input-number	63ms	56.1ms	+12.3%	🔻
kol-modal	23ms	20.5ms	+12.2%	🔻
kol-button-link	55.9ms	50.7ms	+10.3%	🔻

📋 Show all results

Component	Current	Baseline	Δ%	Result
kol-abbr	21.2ms	19.8ms	+7.1%	➖
kol-accordion	128.8ms	131ms	-1.7%	➖
kol-alert	109.4ms	105.9ms	+3.3%	➖
kol-avatar	25.9ms	26.9ms	-3.7%	➖
kol-badge	64.7ms	70.1ms	-7.7%	➖
kol-breadcrumb	100.2ms	97.6ms	+2.7%	➖
kol-button	61.3ms	63ms	-2.7%	➖
kol-button-link	55.9ms	50.7ms	+10.3%	🔻
kol-card	27.1ms	22.6ms	+19.9%	🔻
kol-details	126.5ms	134.9ms	-6.2%	➖
kol-drawer	43.6ms	25.6ms	+70.3%	🔻
kol-form	28.6ms	35.6ms	-19.7%	✅
kol-heading	20.3ms	21.5ms	-5.6%	➖
kol-icon	65.8ms	65.1ms	+1.1%	➖
kol-image	18.2ms	19.3ms	-5.7%	➖
kol-input-checkbox	137.3ms	141.3ms	-2.8%	➖
kol-input-color	70ms	81.9ms	-14.5%	✅
kol-input-date	68.9ms	70.3ms	-2%	➖
kol-input-email	55.7ms	62.5ms	-10.9%	✅
kol-input-file	99ms	93.7ms	+5.7%	➖
kol-input-number	63ms	56.1ms	+12.3%	🔻
kol-input-password	51.3ms	51.6ms	-0.6%	➖
kol-input-radio	49.3ms	56.5ms	-12.7%	✅
kol-input-text	57.1ms	59.3ms	-3.7%	➖
kol-link	53ms	49.8ms	+6.4%	➖
kol-link-button	59.6ms	56.5ms	+5.5%	➖
kol-modal	23ms	20.5ms	+12.2%	🔻
kol-nav	32.5ms	33.9ms	-4.1%	➖
kol-pagination	424.7ms	423.8ms	+0.2%	➖
kol-popover-button	68.8ms	71.3ms	-3.5%	➖
kol-progress	29.5ms	32.8ms	-10.1%	✅
kol-quote	18.7ms	19ms	-1.6%	➖
kol-select	118.1ms	117.1ms	+0.9%	➖
kol-skip-nav	19.8ms	23.6ms	-16.1%	✅
kol-spin	23.5ms	24.2ms	-2.9%	➖
kol-split-button	165.6ms	174.7ms	-5.2%	➖
kol-table-stateful	373.1ms	374.7ms	-0.4%	➖
kol-table-stateless	387.5ms	437ms	-11.3%	✅
kol-tabs	28.6ms	32.3ms	-11.5%	✅
kol-textarea	50.1ms	54.1ms	-7.4%	➖
kol-toolbar	31.9ms	36ms	-11.4%	✅
kol-tree	26.3ms	26.5ms	-0.8%	➖
kol-tree-item	64.1ms	64ms	+0.2%	➖
kol-version	145.7ms	154.8ms	-5.9%	➖