fix(cmdk): update search-modal assertions to the renamed New chat label

#6543 renamed the ask-Sim label to sentence case but left the two assertions
expecting 'New Chat', which has been failing Lint and Test on staging for
every PR since.

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/search-modal/search-modal.test.tsx

@@ -149,7 +149,7 @@ describe('SearchModal', () => {
 
     const askRow = document.querySelector<HTMLElement>('[cmdk-item]')
     expect(document.querySelectorAll('[cmdk-item]')).toHaveLength(1)
-    expect(askRow?.textContent).toBe('New Chat: plan our Slack launch week')
+    expect(askRow?.textContent).toBe('New chat: plan our Slack launch week')
     expect(askRow?.getAttribute('aria-selected')).toBe('true')
 
     act(() => {
@@ -192,7 +192,7 @@ describe('SearchModal', () => {
         new KeyboardEvent('keydown', { key: 'Tab', bubbles: true, cancelable: true })
       )
     })
-    expect(document.querySelector('[cmdk-item]')?.textContent).toBe('New Chat: rainbow')
+    expect(document.querySelector('[cmdk-item]')?.textContent).toBe('New chat: rainbow')
 
     act(() => {
       document