feat(studio): enable blocks panel by default

Flip the fallback from false to true so the blocks panel is on for
everyone out of the box. Users can still disable it via
VITE_STUDIO_ENABLE_BLOCKS_PANEL=false if needed.

Author: miguel-heygen

packages/studio/src/components/editor/manualEditingAvailability.ts

@@ -62,7 +62,7 @@ export const STUDIO_MOTION_PANEL_ENABLED = resolveStudioBooleanEnvFlag(
 export const STUDIO_BLOCKS_PANEL_ENABLED = resolveStudioBooleanEnvFlag(
   env,
   ["VITE_STUDIO_ENABLE_BLOCKS_PANEL", "VITE_STUDIO_BLOCKS_PANEL_ENABLED"],
-  false,
+  true,
 );
 
 export const STUDIO_PREVIEW_SELECTION_ENABLED = STUDIO_INSPECTOR_PANELS_ENABLED;