Fix warnings and enable --warn-error in CI (#1136)

Author: cknitt

.github/workflows/pull-request.yml

@@ -10,6 +10,6 @@ jobs:
           node-version-file: ".node-version"
           cache: npm
       - run: npm ci
-      - run: npm run res:build
+      - run: npm run res:build -- --warn-error +3+8+11+12+26+27+31+32+33+34+35+39+44+45+110
       - run: npm test
       - run: npm run ci:format

src/layouts/ApiLayout.res

@@ -74,8 +74,6 @@ let make = (
 
   let (isSidebarOpen, setSidebarOpen) = React.useState(_ => false)
 
-  let (isScrollLock, setScrollLock) = ScrollLockContext.useScrollLock()
-
   let toggleSidebar = () => {
     setSidebarOpen(prev => !prev)
   }