fix(custom-tool): keep dropdown anchors content-relative on body scroll

Review follow-up. The autocomplete popovers already portal their menus (never clipped by the body's scroll boundary), so the fix is only to restore the body as the scroll region. Reverting the dropdowns to their content-relative absolute anchors keeps them glued to the caret while the body scrolls; the caret-viewport inputRef anchoring used fixed viewport coordinates that only refreshed on edits, detaching the menu on scroll.

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/tool-input/components/custom-tool-modal/custom-tool-modal.tsx

@@ -834,9 +834,10 @@ try {
         {/*
           The body is the scroll region so tall schema/code content stays inside
           the modal and the footer (Next/Save) is always reachable. The EnvVar,
-          Tag, and schema-param autocompletes anchor to the textarea caret and
-          render in portaled popovers, so they aren't clipped by this scroll
-          boundary — see the `inputRef` wiring below.
+          Tag, and schema-param autocompletes render their menus in portaled
+          popovers (never clipped by this scroll boundary) and anchor to a
+          caret-positioned element inside the editor wrapper, so the menus track
+          the caret as the body scrolls.
         */}
         <ChipModalBody className='gap-2 px-4'>
           <ChipModalTabs
@@ -1046,10 +1047,11 @@ try {
                       setShowEnvVars(false)
                       setSearchTerm('')
                     }}
-                    inputRef={{
-                      current: codeEditorRef.current?.querySelector(
-                        'textarea'
-                      ) as HTMLTextAreaElement,
+                    className='w-64'
+                    style={{
+                      position: 'absolute',
+                      top: `${dropdownPosition.top}px`,
+                      left: `${dropdownPosition.left}px`,
                     }}
                   />
                 )}
@@ -1066,10 +1068,11 @@ try {
                       setShowTags(false)
                       setActiveSourceBlockId(null)
                     }}
-                    inputRef={{
-                      current: codeEditorRef.current?.querySelector(
-                        'textarea'
-                      ) as HTMLTextAreaElement,
+                    className='w-64'
+                    style={{
+                      position: 'absolute',
+                      top: `${dropdownPosition.top}px`,
+                      left: `${dropdownPosition.left}px`,
                     }}
                   />
                 )}