Stop onboarding and satellite pickers from turning on DEC mouse reporting

[TheGreatAxios]

Summary

• The provider-setup onboarding screen and the satellite list modals (session resume, session mode) each create their own OpenTUI renderer with createCliRenderer defaults, which turn DEC mouse reporting (?1000/?1002/?1003/?1006) on — stealing button-1 drags from the terminal before a session even starts, even though the main product host already disabled it
• Disable mouse reporting on those two renderer call sites the same way the product host does, so drag-select and the terminal's own copy work with no modifier from the very first screen onward

Verification

• bun run typecheck, bun run build, and bun test all pass; the only intermittent failures are pre-existing flaky markdown-rows.test.ts cases (which sub-test fails varies by run), reproduced independently of this change and unrelated to mouse/renderer code
• Added a test that mocks @opentui/core so the real (non-test-injected) createCliRenderer branch in both runListModal and runProviderSetup actually runs, and asserts the call was made with useMouse: false, enableMouseMovement: false; the mock is restored in afterAll so it cannot leak into other tests in the same process
• Captured raw pty bytes (via script) from the actual built CLI's onboarding screen before and after the fix: before, the stream contained ?1000h?1002h?1003h?1006h; after, none of those four sequences appear anywhere in the captured stream
• Checked the two surfaces that actually lose mouse reporting here, not the main product host: list-modal.ts's own onKey handles Escape/Ctrl+C/Ctrl+D, and its createAppShell call wires the shared up/down/j/k overlay navigation (shell.ts moveOverlaySelection) with wireKeys at its default of true; provider-setup.ts has its own complete onKey handler (provider-setup.ts:1334-1378) with Ctrl+C/Ctrl+D cancel, Escape, and up/down/j/k list navigation, independent of the shell. Both surfaces are fully keyboard-operable with no mouse.

Closes CL-5540

[linear-code]

CL-5540