fix(knowledge): keep computer upload and place creation below it

tests/unit/cloud-knowledge-picker.test.tsx

@@ -57,13 +57,13 @@ it('joins readable IDs to the owned-only catalog and selects multiple libraries
   expect(changes).toHaveBeenLastCalledWith(expect.objectContaining({ knowledges: ['own', 'other-shared'] }));
 });
 
-it('never offers shared libraries to document management or mounts their mutating controls', async () => {
+it('never offers shared libraries to document management or enables their upload controls', async () => {
   databases = [];
   render(<Harness initial={['shared']} />);
   await screen.findByText('MakeLore知识 · 只读'); openUpload();
   const manager = screen.getByRole('combobox', { name: '管理的知识库' });
   expect(within(manager).queryByRole('option', { name: '创作指南' })).not.toBeInTheDocument();
-  expect(screen.queryByRole('button', { name: '从电脑上传', exact: true })).not.toBeInTheDocument();
+  expect(screen.getByRole('button', { name: '从电脑上传', exact: true })).toBeDisabled();
   expect(screen.queryByRole('button', { name: '删除知识库', exact: true })).not.toBeInTheDocument();
   expect(api.call.mock.calls.every(([operation]) => operation !== 'knowledgeFiles')).toBe(true);
 });
@@ -78,7 +78,7 @@ it('allows readable binding after an owned-list failure while withholding docume
   expect(screen.queryByRole('group', { name: 'MakeLore知识' })).not.toBeInTheDocument();
   choose('shared'); openUpload();
   expect(screen.getByRole('combobox', { name: '管理的知识库' })).toBeDisabled();
-  expect(screen.queryByRole('button', { name: '从电脑上传', exact: true })).not.toBeInTheDocument();
+  expect(screen.getByRole('button', { name: '从电脑上传', exact: true })).toBeDisabled();
   failed = false;
   fireEvent.click(screen.getByRole('button', { name: '刷新知识库', exact: true }));
   await screen.findByText('MakeLore知识 · 只读');