@remotion/studio: Allow precise scale input

[JonnyBurger]

Summary

• allow scale fields to accept typed values that do not align with the interaction step
• keep scale dragging and arrow-key increments at the configured step
• add a Studio browser regression test that persists scale: 0.525

Test plan

• bun run build
• bun run stylecheck
• bunx playwright test e2e/effect-keyframes.test.mts --project=chromium

Closes #9765

[vercel]

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Project	Deployment	Actions	Updated (UTC)
bugs	Ready	Preview	Aug 2, 2026 3:35pm
remotion	Ready	Preview	Aug 2, 2026 3:35pm

[pullfrog]

✅ No new issues found.

Reviewed changes

• InputDragger: Add allowStepMismatch prop — Typed values bypass step-alignment validation (step='any') while dragging and arrow key increments remain aligned to the configured step.
• TimelineScaleField: Enable precise scale input — Pass allowStepMismatch on the X and Y scale draggers so users can type values like 0.525.
• E2E test — Opens an EffectKeyframeE2e composition with a named scale control, types 0.525, presses ArrowUp to verify it produces 0.535, types 0.525 again, commits with Enter, and asserts the value was written to source.

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