Fix(webapp): Dynamically load spline on 404 on page #3978

Job	Run time
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	48s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	20s
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	17s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	52s
typecheck / typecheck	37s
units / internal / 🧪 Unit Tests: Internal (5, 8)	40s
units / webapp / 🧪 Unit Tests: Webapp (2, 8)	41s
units / webapp / 🧪 Unit Tests: Webapp (4, 8)	39s
units / internal / 🧪 Unit Tests: Internal (3, 8)	42s
units / internal / 🧪 Unit Tests: Internal (7, 8)	38s
units / internal / 🧪 Unit Tests: Internal (4, 8)	40s
units / webapp / 🧪 Unit Tests: Webapp (5, 8)	40s
units / internal / 🧪 Unit Tests: Internal (2, 8)	40s
units / internal / 🧪 Unit Tests: Internal (1, 8)	40s
units / internal / 🧪 Unit Tests: Internal (6, 8)	40s
units / webapp / 🧪 Unit Tests: Webapp (8, 8)	40s
units / webapp / 🧪 Unit Tests: Webapp (6, 8)	38s
units / packages / 🧪 Unit Tests: Packages (1, 1)	42s
units / internal / 🧪 Unit Tests: Internal (8, 8)	40s
units / webapp / 🧪 Unit Tests: Webapp (7, 8)	39s
units / webapp / 🧪 Unit Tests: Webapp (3, 8)	41s
units / webapp / 🧪 Unit Tests: Webapp (1, 8)	40s
units / webapp / 📊 Merge Reports	20s
units / internal / 📊 Merge Reports	20s
units / packages / 📊 Merge Reports	19s
	15m 13s

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