test: expect omit_messages in the tile-delegate resume call shape

Two more call-shape-pinning tests (cold tile resume, default-profile
resume) assert session.resume's exact params; the delegate passes
omit_messages: true like every other Desktop resume call site.
Swept all 5 desktop test files that reference session.resume/activate:
380 of 381 files green (the one failure is a pre-existing locale-
dependent number-grouping test that fails identically on clean main).

apps/desktop/src/app/contrib/hooks/use-session-tile-delegate.test.ts

@@ -77,7 +77,8 @@ describe('useSessionTileDelegate resumeTile', () => {
     expect(requestGateway).toHaveBeenCalledWith('session.resume', {
       session_id: 'stored-x',
       cols: 96,
-      profile: 'ai-engineer'
+      profile: 'ai-engineer',
+      omit_messages: true
     })
   })
 
@@ -94,7 +95,8 @@ describe('useSessionTileDelegate resumeTile', () => {
     expect(requestGateway).toHaveBeenCalledWith('session.resume', {
       session_id: 'stored-y',
       cols: 96,
-      profile: 'default'
+      profile: 'default',
+      omit_messages: true
     })
   })
 })